在编写代码的时候有个神奇的工具总是好的!下面这里收集了 40+ PHP 代码片段,可以帮助你开发 PHP 项目。
这些 PHP 片段对于 PHP 初学者也非常有帮助,非常容易学习,让我们开始学习吧~
在开发 Web 或者移动应用的时候,经常会遇到需要发送 SMS 给用户,或者因为登录原因,或者是为了发送信息。下面的 PHP 代码就实现了发送 SMS 的功能。
为了使用任何的语言发送 SMS,需要一个 SMS gateway。大部分的 SMS 会提供一个 API,这里是使用
MSG91 作为 SMS gateway。
function send_sms($mobile, $msg)
{
$authKey = "XXXXXXXXXXX";
date_default_timezone_set("Asia/Kolkata");
$date = strftime("%Y-%m-%d %H:%M:%S"); //Multiple mobiles numbers separated by comma
$mobileNumber = $mobile;
//Sender ID,While using route4 sender id should be 6 characters long.
$senderId = "IKOONK";
//Your message to send, Add URL encoding here.
$message = urlencode($msg);
//Define route
$route = "template"; //Prepare you post parameters
$postData = array(
'authkey' => $authKey,
'mobiles' => $mobileNumber,
'message' => $message,
'sender' => $senderId,
'route' => $route
);
//API URL
$url = "https://control.msg91.com/sendhttp.php";
// init the resource
$ch = curl_init();
curl_setopt_array($ch, array(
CURLOPT_URL => $url,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => $postData
//,CURLOPT_FOLLOWLOCATION => true ));
//Ignore SSL certificate verification curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
//get response
$output = curl_exec($ch); //Print error if any
if (curl_errno($ch)) {
echo 'error:' . curl_error($ch);
}
curl_close($ch);
}
其中“authKey = "XXXXXXXXXXX";”需要你输入你的密码,“
语法:
<?php
$message = "Hello World";
$mobile = "918112998787";
send_sms($mobile, $message);
?>
Mandrill 是一款强大的 SMTP 提供器。开发者倾向于使用一个第三方 SMTP provider 来获取更好的收件交付。
下面的函数中,你需要把 “Mandrill.php” 放在同一个文件夹,作为 PHP 文件,这样就可以使用TA来发送邮件。
function send_email($to_email, $subject, $message1)
{
require_once 'Mandrill.php';
$apikey = 'XXXXXXXXXX'; //specify your api key here
$mandrill = new Mandrill($apikey);
$message = new stdClass();
$message->html = $message1;
$message->text = $message1;
$message->subject = $subject;
$message->from_email = "blog@koonk.com";//Sender Email
$message->from_name = "KOONK";//Sender Name
$message->to = array(array("email" => $to_email));
$message->track_opens = true;
$response = $mandrill->messages->send($message);
}
“$apikey = 'XXXXXXXXXX'; //specify your api key here”这里需要你指定你的 API 密钥(从 Mandrill 账户中获得)。
语法:
<?php
$to = "abc@example.com";
$subject = "This is a test email";
$message = "Hello World!";
send_email($to, $subject, $message);
为了达到最好的效果,最好按照 Mandrill 的教程去配置 DNS。
SQL 注入或者 SQLi 常见的攻击网站的手段,使用下面的代码可以帮助你防止这些工具。
function clean($input)
{
if (is_array($input)) {
foreach ($input as $key => $val) {
$output[$key] = clean($val);
// $output[$key] = $this->clean($val);
}
}else{
output = (string)$input;
// if magic quotes is on then use strip slashes
if (get_magic_quotes_gpc()){
$output = stripslashes($output);
}
// $output = strip_tags($output);
$output = htmlentities($output, ENT_QUOTES, 'UTF-8');
}
// return the clean text
return $output;
}
}
语法:
<?php
$text = "<script>alert(1)</script>";
$text = clean($text);
echo $text;
?>
使用下面的函数,可以检测用户是在哪个城市访问你的网站
function detect_city($ip)
{
$default = 'UNKNOWN';
$curlopt_useragent = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)';
$url = 'http://ipinfodb.com/ip_locator.php?ip=' . urlencode($ip);
$ch = curl_init();
$curl_opt = array(
CURLOPT_FOLLOWLOCATION => 1,
CURLOPT_HEADER => 0,
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_USERAGENT => $curlopt_useragent,
CURLOPT_URL => $url,
CURLOPT_TIMEOUT => 1,
CURLOPT_REFERER => 'http://' . $_SERVER['HTTP_HOST'],
);
curl_setopt_array($ch, $curl_opt);
$content = curl_exec($ch);
if (!is_null($curl_info)) {
$curl_info = curl_getinfo($ch);
}
curl_close($ch);
if (preg_match('{<li>City : ([^<]*)</li>}i', $content, $regs)) {
$city = $regs[1];
}
if (preg_match('{<li>State/Province : ([^<]*)</li>}i', $content, $regs)) {
$state = $regs[1];
}
if ($city != '' && $state != '') {
$location = $city . ', ' . $state;
return $location;
} else {
return $default;
}
}
语法:
<?php
$ip = $_SERVER['REMOTE_ADDR'];
$city = detect_city($ip);
echo $city;
?>
使用下面的函数,可以获取任意 Web 页面的 HTML 代码
function display_sourcecode($url)
{
$lines = file($url);
$output = "";
foreach ($lines as $line_num => $line) {
// loop thru each line and prepend line numbers $output.= "Line #<b>{$line_num}</b> : " . htmlspecialchars($line) . "<br>\n";
}
}
语法:
<?php
$url = "http://blog.koonk.com";
$source = display_sourcecode($url);
echo $source;
?>
function fb_fan_count($facebook_name){
$data = json_decode(file_get_contents("https://graph.facebook.com/".$facebook_name));
$likes = $data->likes;
return $likes;
}
<?php
$page = "koonktechnologies";
$count = fb_fan_count($page);
echo $count;
?>
function dominant_color($image)
{
$i = imagecreatefromjpeg($image);
for ($x = 0; $x < imagesx($i); $x++) {
for ($y = 0; $y < imagesy($i); $y++) {
$rgb = imagecolorat($i, $x, $y);
$r = ($rgb >> 16) & 0xFF;
$g = ($rgb >> & 0xFF;
$b = $rgb & 0xFF;
$rTotal += $r;
$gTotal += $g;
$bTotal += $b;
$total++;
}
}
$rAverage = round($rTotal / $total);
$gAverage = round($gTotal / $total);
$bAverage = round($bTotal / $total);
}
使用下面的函数可以获取任何域名用户的完整细节
function whois_query($domain)
{
// fix the domain name: $domain = strtolower(trim($domain));
$domain = preg_replace('/^http:\/\//i', '', $domain);
$domain = preg_replace('/^www\./i', '', $domain);
$domain = explode('/', $domain);
$domain = trim($domain[0]);
// split the TLD from domain name
$_domain = explode('.', $domain);
$lst = count($_domain) - 1;
$ext = $_domain[$lst];
// You find resources and lists // like these on wikipedia: // // http://de.wikipedia.org/wiki/Whois
$servers = array(
"biz" => "whois.neulevel.biz",
"com" => "whois.internic.net",
"us" => "whois.nic.us",
"coop" => "whois.nic.coop",
"info" => "whois.nic.info",
"name" => "whois.nic.name",
"net" => "whois.internic.net",
"gov" => "whois.nic.gov",
"edu" => "whois.internic.net",
"mil" => "rs.internic.net",
"int" => "whois.iana.org",
"ac" => "whois.nic.ac",
"ae" => "whois.uaenic.ae",
"at" => "whois.ripe.net",
"au" => "whois.aunic.net",
"be" => "whois.dns.be",
"bg" => "whois.ripe.net",
"br" => "whois.registro.br",
"bz" => "whois.belizenic.bz",
"ca" => "whois.cira.ca",
"cc" => "whois.nic.cc",
"ch" => "whois.nic.ch",
"cl" => "whois.nic.cl",
"cn" => "whois.cnnic.net.cn",
"cz" => "whois.nic.cz",
"de" => "whois.nic.de",
"fr" => "whois.nic.fr",
"hu" => "whois.nic.hu",
"ie" => "whois.domainregistry.ie",
"il" => "whois.isoc.org.il",
"in" => "whois.ncst.ernet.in",
"ir" => "whois.nic.ir",
"mc" => "whois.ripe.net",
"to" => "whois.tonic.to",
"tv" => "whois.tv",
"ru" => "whois.ripn.net",
"org" => "whois.pir.org",
"aero" => "whois.information.aero",
"nl" => "whois.domain-registry.nl"
);
if (!isset($servers[$ext])) {
die('Error: No matching nic server found!');
}
$nic_server = $servers[$ext];
$output = '';
// connect to whois server:
if ($conn = fsockopen ($nic_server, 43)) {
fputs($conn, $domain . "\r\n");
while (!feof($conn)) {
$output .= fgets($conn, 128);
}
fclose($conn);
} else {
die('Error: Could not connect to ' . $nic_server . '!');
}
return $output;
}
语法:
<?php
$domain = "http://www.blog.koonk.com";
$result = whois_query($domain);
print_r($result);
?>
有时候,当在网站填写表单,用户可能会输入错误的邮箱地址,这个函数可以验证邮箱地址是否有效。
function is_validemail($email)
{
$check = 0;
if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
$check = 1;
}
return $check;
}
语法:
<?php
$email = "blog@koonk.com";
$check = is_validemail($email);
echo $check; // If the output is 1, then email is valid.
?>
<?php
function getRealIpAddr()
{
if (!emptyempty($_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
} elseif (!emptyempty($_SERVER['HTTP_X_FORWARDED_FOR'])){
//to check ip is pass from proxy {
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
}else{
$ip = $_SERVER['REMOTE_ADDR'];
}
return $ip;
}
语法:
<?php
$ip = getRealIpAddr();
echo $ip;
?>
如果你正在开发论坛,博客或者是一个常规的表单提交,很多时候都要用户访问一个网站。使用这个函数,URL 字符串就可以自动的转换为超链接。
function makeClickableLinks($text)
{
$text = eregi_replace('(((f|ht){1}tp://)[-a-zA-Z0-9@:%_+.~#?&//=]+)','<a href="\1">\1</a>', $text);
$text = eregi_replace('([[:space:]()[{}])(www.[-a-zA-Z0-9@:%_+.~#?&//=]+)','\1<a href="http://\2">\2</a>', $text);
$text = eregi_replace('([_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3})','<a href="mailto:\1">\1</a>', $text);
return $text;
}
语法:
<?php
$text = "This is my first post on http://blog.koonk.com";
$text = makeClickableLinks($text);
echo $text;
?>
这个代码片段可以方便你禁止某些特定的 IP 地址访问你的网站
if (!file_exists('blocked_ips.txt')) {
$deny_ips = array(
'127.0.0.1',
'192.168.1.1',
'83.76.27.9',
'192.168.1.163'
);
} else {
$deny_ips = file('blocked_ips.txt');
} // read user ip adress:
$ip = isset($_SERVER['REMOTE_ADDR']) ? trim($_SERVER['REMOTE_ADDR']) : '';
// search current IP in $deny_ips array
if ((array_search($ip, $deny_ips)) !== FALSE) {
// address is blocked: echo 'Your IP adress ('.$ip.') was blocked!';
exit;
}
如果你需要下载特定的文件而不用另开新窗口,下面的代码片段可以帮助你。
function force_download($file)
{
$dir = "../log/exports/";
if ((isset($file)) && (file_exists($dir . $file))) {
header("Content-type: application/force-download");
header('Content-Disposition: inline; filename="' . $dir . $file . '"');
header("Content-Transfer-Encoding: Binary");
header("Content-length: " . filesize($dir . $file));
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="' . $file . '"');
readfile("$dir$file");
} else {
echo "No file selected";
}
}
使用下面的 PHP 片段可以创建 JSON 数据,可以方便你创建移动应用的 Web 服务
$json_data = array ('id'=>1,'name'=>"Mohit");
echo json_encode($json_data);
使用下面的 PHP 片段可以即时压缩 zip 文件
<?php
function create_zip($files = array(), $destination = '', $overwrite = false)
{
//if the zip file already exists and overwrite is false, return false
if(file_exists($destination) && !$overwrite) {
return false;
}
//vars
$valid_files = array();
//if files were passed in...
if(is_array($files)) {
//cycle through each file
foreach($files as $file) {
//make sure the file exists
if(file_exists($file)) {
$valid_files[] = $file;
}
}
}
//if we have good files...
if(count($valid_files)) {
//create the archive
$zip = new ZipArchive();
if ($zip->open($destination, $overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) {
return false;
}
//add the files
foreach($valid_files as $file) {
$zip->addFile($file, $file);
}
//debug
echo 'The zip archive contains ',$zip->numFiles,' files with a status of ',$zip->status;
//close the zip -- done!
$zip->close();
//check to make sure the file exists
return file_exists($destination);
}else {
return false;
}
}
语法:
<?php
$files = array('file1.jpg', 'file2.jpg', 'file3.gif');
create_zip($files, 'myzipfile.zip', true);
?>
<?php
function unzip($location,$newLocation)
{
if(exec("unzip $location",$arr)){
mkdir($newLocation);
for($i = 1;$i< count($arr);$i++){
$file = trim(preg_replace("~inflating: ~","",$arr[$i]));
copy($location.'/'.$file,$newLocation.'/'.$file);
unlink($location.'/'.$file);
}
return TRUE;
}else{
return FALSE;
}
}
语法:
<?php
unzip('test.zip','unziped/test'); //File would be unzipped in unziped/test folder
?>
<?php
function resize_image($filename, $tmpname, $xmax, $ymax)
{
$ext = explode(".", $filename);
$ext = $ext[count($ext) - 1];
if ($ext == "jpg" || $ext == "jpeg")
$im = imagecreatefromjpeg($tmpname);
elseif ($ext == "png")
$im = imagecreatefrompng($tmpname);
elseif ($ext == "gif")
$im = imagecreatefromgif($tmpname);
$x = imagesx($im);
$y = imagesy($im);
if ($x <= $xmax && $y <= $ymax)
return $im;
if ($x >= $y) {
$newx = $xmax;
$newy = $newx * $y / $x;
} else {
$newy = $ymax;
$newx = $x / $y * $newy;
}
$im2 = imagecreatetruecolor($newx, $newy);
imagecopyresized($im2, $im, 0, 0, 0, 0, floor($newx), floor($newy), $x, $y);
return $im2;
}
之前我们提供了如何使用 Mandrill 发送邮件的 PHP 代码片段,但是如果你不想使用第三方服务,那么可以使用下面的 PHP 代码片段。
function send_mail($to, $subject, $body)
{
$headers = "From: KOONK\r\n";
$headers .= "Reply-To: blog@koonk.com\r\n";
$headers .= "Return-Path: blog@koonk.com\r\n";
$headers .= "X-Mailer: PHP5\n";
$headers .= 'MIME-Version: 1.0' . "\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
mail($to, $subject, $body, $headers);
}
语法:
<?php
$to = "admin@koonk.com";
$subject = "This is a test mail";
$body = "Hello World!";
send_mail($to,$subject,$body);
?>
<?php
function secsToStr($secs)
{
if ($secs >= 86400) {
$days = floor($secs / 86400);
$secs = $secs % 86400;
$r = $days . ' day';
if ($days <> 1) {
$r .= 's';
}
if ($secs > 0) {
$r .= ', ';
}
}
if ($secs >= 3600) {
$hours = floor($secs / 3600);
$secs = $secs % 3600;
$r .= $hours . ' hour';
if ($hours <> 1) {
$r .= 's';
}
if ($secs > 0) {
$r .= ', ';
}
}
if ($secs >= 60) {
$minutes = floor($secs / 60);
$secs = $secs % 60;
$r .= $minutes . ' minute';
if ($minutes <> 1) {
$r .= 's';
}
if ($secs > 0) {
$r .= ', ';
}
}
$r .= $secs . ' second';
if ($secs <> 1) {
$r .= 's';
}
return $r;
}
语法:
<?php
$seconds = "56789";
$output = secsToStr($seconds);
echo $output;
?>
连接 MySQL 数据库
<?php
$DBNAME = 'koonk';
$HOST = 'localhost';
$DBUSER = 'root';
$DBPASS = 'koonk';
$CONNECT = mysql_connect($HOST, $DBUSER, $DBPASS);
if (!$CONNECT) {
echo 'MySQL Error: ' . mysql_error();
}
$SELECT = mysql_select_db($DBNAME);
if (!$SELECT) {
echo 'MySQL Error: ' . mysql_error();
}
?>
使用下面的 PHP 代码片段可以在一个目录中列出所有文件和文件夹
<?php
function list_files($dir)
{
if (is_dir($dir)) {
if ($handle = opendir($dir)) {
while (($file = readdir($handle)) !== false) {
if ($file != "." & amp;&$file != ".." & amp;&$file != "Thumbs.db"/*pesky windows, images..*/)
{
echo '<a target="_blank" href="' . $dir . $file . '">' . $file . '</a><br>' . "\n";
}
}
closedir($handle);
}
}
}
语法:
<?php list_files("images/"); //This will list all files of images folder ?>
使用下面的 PHP 代码片段可以检测用户浏览器所使用的语言
<?php
function get_client_language($availableLanguages, $default='en'){
if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
$langs=explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']);
foreach ($langs as $value){
$choice=substr($value,0,2);
if(in_array($choice, $availableLanguages)){
return $choice;
}
}
}
return $default;
}
<?php
function readCSV($csvFile){
$file_handle = fopen($csvFile, 'r');
while (!feof($file_handle) ) {
$line_of_text[] = fgetcsv($file_handle, 1024);
}
fclose($file_handle);
return $line_of_text;
}
语法:
<?php
$csvFile = "test.csv";
$csv = readCSV($csvFile);
$a = csv[0][0]; // This will get value of Column 1 & Row 1 ?>
<?php
function generateCsv($data, $delimiter = ',', $enclosure = '"')
{
$handle = fopen('php://temp', 'r+');
foreach($data as $line) {
fputcsv($handle, $line, $delimiter, $enclosure);
}
rewind($handle);
while(!feof($handle)){
$contents .= fread($handle, 8192);
}
fclose($handle);
return $contents;
}
语法:
<?php
$data[0] = "apple";
$data[1] = "oranges";
generateCsv($data, $delimiter = ',', $enclosure = '"');
?>
$xml_string="<?xml version='1.0'?>
<moleculedb>
<molecule name='Benzine'>
<symbol>ben</symbol>
<code>A</code>
</molecule>
<molecule name='Water'>
<symbol>h2o</symbol>
<code>K</code>
</molecule>
</moleculedb>";
//load the xml string using simplexml function
$xml = simplexml_load_string($xml_string);
//loop through the each node of molecule
foreach ($xml->molecule as $record)
{
//attribute are accessted by
echo $record['name'], ' ';
//node are accessted by -> operator
echo $record->symbol, ' ';
echo $record->code, '<br />';
}
<?php
$json_string='{"id":1,"name":"rolf","country":"russia","office":["google","oracle"]} ';
$obj=json_decode($json_string); //print the parsed data
echo $obj->name; //displays rolf
echo $obj->office[0]; //displays google
这个 PHP 片段可以帮助你让用户登录后直接跳转到之前浏览的页面
<?php
function current_url()
{
$url = "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$validURL = str_replace("&", "&", $url);
return validURL;
}
语法:
<?php
echo "Currently you are on: ".current_url();
?>
<?php
function my_twitter($username){
$no_of_tweets = 1;
$feed = "http://search.twitter.com/search.atom?q=from:" . $username . "&rpp=" . $no_of_tweets;
$xml = simplexml_load_file($feed);
foreach($xml->children() as $child) {
foreach($child as $value) {
if($value->getName() == "link") $link = $value['href'];
if($value->getName() == "content"){
$content = $value . "";
echo '<p class="twit">' . $content . ' <a class="twt" href="' . $link . '" title=""> </a></p>';
}
}
}
}
语法:
<?php
$handle = "koonktech";
my_twitter($handle);
?>
使用这个 PHP 片段可以检测你的页面 URL 有多少转发数量
<?php
function tweetCount($url) {
$content = file_get_contents("http://api.tweetmeme.com/url_info?url=".$url);
$element = new SimpleXmlElement($content);
$retweets = $element->story->url_count;
if($retweets){
return $retweets;
} else {
return 0;
}
}
语法:
<?php
$url = "http://blog.koonk.com";
$count = tweetCount($url);
return $count;
?>
<?php
$date1 = date( 'Y-m-d' );
$date2 = "2015-12-04";
$diff = abs(strtotime($date2) - strtotime($date1));
$years = floor($diff / (365*60*60*24));
$months = floor(($diff - $years * 365*60*60*24) / (30*60*60*24));
$days = floor(($diff - $years * 365*60*60*24 - $months*30*60*60*24)/ (60*60*24));
printf("%d years, %d months, %d days\n", $years, $months, $days);
$date1 = new DateTime("2007-03-24");
$date2 = new DateTime("2009-06-26");
$interval = $date1->diff($date2);
echo "difference " . $interval->y . " years, " . $interval->m." months, ".$interval->d." days ";
// shows the total amount of days (not divided into years, months and days like above)
echo "difference " . $interval->days . " days ";
/** * Calculate differences between two dates with precise semantics. Based on PHPs DateTime::diff() * implementation by Derick Rethans. Ported to PHP by Emil H, 2011-05-02. No rights reserved. * * See here for original code: * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/tm2unixtime.c?revision=302890&view=markup * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/interval.c?revision=298973&view=markup */
function _date_range_limit($start, $end, $adj, $a, $b, $result){
if ($result[$a] < $start) {
$result[$b] -= intval(($start - $result[$a] - 1) / $adj) + 1;
$result[$a] += $adj * intval(($start - $result[$a] - 1) / $adj + 1);
}
if ($result[$a] >= $end) {
$result[$b] += intval($result[$a] / $adj);
$result[$a] -= $adj * intval($result[$a] / $adj);
}
return $result;
}
function _date_range_limit_days($base, $result){
$days_in_month_leap = array(31, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
$days_in_month = array(31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
date_range_limit(1, 13, 12, "m", "y", &$base);
$year = $base["y"];
$month = $base["m"];
if (!$result["invert"]) {
while ($result["d"] < 0) {
$month--;
if ($month < 1) {
$month += 12;
$year--;
}
$leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
$days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];
$result["d"] += $days;
$result["m"]--;
}
} else {
while ($result["d"] < 0) {
$leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
$days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];
$result["d"] += $days;
$result["m"]--;
$month++;
if ($month > 12) {
$month -= 12;
$year++;
}
}
}
return $result;
}
function _date_normalize($base, $result){
$result = _date_range_limit(0, 60, 60, "s", "i", $result);
$result = _date_range_limit(0, 60, 60, "i", "h", $result);
$result = _date_range_limit(0, 24, 24, "h", "d", $result);
$result = _date_range_limit(0, 12, 12, "m", "y", $result);
$result = _date_range_limit_days(&$base, &$result);
$result = _date_range_limit(0, 12, 12, "m", "y", $result);
return $result;
} /** * Accepts two unix timestamps. */
function _date_diff($one, $two){
$invert = false;
if ($one > $two) {
list($one, $two) = array($two, $one);
$invert = true;
}
$key = array("y", "m", "d", "h", "i", "s");
$a = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $one))));
$b = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $two))));
$result = array();
$result["y"] = $b["y"] - $a["y"];
$result["m"] = $b["m"] - $a["m"];
$result["d"] = $b["d"] - $a["d"];
$result["h"] = $b["h"] - $a["h"];
$result["i"] = $b["i"] - $a["i"];
$result["s"] = $b["s"] - $a["s"];
$result["invert"] = $invert ? 1 : 0;
$result["days"] = intval(abs(($one - $two)/86400));
if ($invert) {
date_normalize(&$a, &$result);
} else {
date_normalize(&$b, &$result);
}
return $result;
}
$date = "2014-12-04 19:37:22";
echo '<pre>';print_r( _date_diff( strtotime($date), time() ) );
echo '</pre>';
?>
<?php
function Delete($path)
{
if (is_dir($path) === true)
{
$files = array_diff(scandir($path), array('.', '..'));
foreach ($files as $file)
{
Delete(realpath($path) . '/' . $file);
}
return rmdir($path);
}
else if (is_file($path) === true)
{
return unlink($path);
}
return false;
}
语法:
<?php
$path = "images/";
Delete($path); // This will delete images folder along with its contents.
?>
<?php
function highlighter_text($text, $words)
{
$split_words = explode( " " , $words );
foreach($split_words as $word)
{
$color = "#4285F4";
$text = preg_replace("|($word)|Ui" ,
"<span style=\"color:".$color.";\"><b>$1</b></span>" , $text );
}
return $text;
}
<?php
$string = "I like chocolates and I like apples";
$words = "apple";
echo highlighter_text($string ,$words);
?>
<?php
$filename = 'blog.csv';
$fp = fopen($filename, 'w');
$output = " Hello ";
$output .= " World! ";
$output .= "\r\n";
fputs($fp, $output);
fclose($fp);
?>
<?php
function imagefromURL($image, $rename)
{
$ch = curl_init($image);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
$rawdata = curl_exec($ch);
curl_close($ch);
$fp = fopen("$rename", 'w');
fwrite($fp, $rawdata);
fclose($fp);
}
语法:
<?php
$url = "http://koonk.com/images/logo.png";
$rename = "koonk.png";
imagefromURL($url,$rename);
?>
<?php
function isvalidURL($url)
{
$check = 0;
if (filter_var($url, FILTER_VALIDATE_URL) !== false) {
$check = 1;
}
return $check;
}
<?php
$url = "http://koonk.com";
$check = checkvalidURL($url);
echo $check; //if returns 1 then URL is valid.
?>
<?php
function qr_code($data, $type = "TXT", $size = '150', $ec = 'L', $margin = '0')
{
$types = array("URL" = --> "http://", "TEL" => "TEL:", "TXT" => "", "EMAIL" => "MAILTO:");
if (!in_array($type, array("URL", "TEL", "TXT", "EMAIL"))) {
$type = "TXT";
}
if (!preg_match('/^' . $types[$type] . '/', $data)) {
$data = str_replace("\\", "", $types[$type]) . $data;
}
$ch = curl_init();
$data = urlencode($data);
curl_setopt($ch, CURLOPT_URL, 'http://chart.apis.google.com/chart');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, 'chs=' . $size . 'x' . $size . '&cht=qr&chld=' . $ec . '|' . $margin . '&chl=' . $data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
$response = curl_exec($ch);
curl_close($ch);
return $response;
}
语法:
<?php
header("Content-type: image/png");
echo qr_code("http://koonk.com", "URL");
?>
<?php
function getDistanceBetweenPointsNew($latitude1, $longitude1, $latitude2, $longitude2)
{
$theta = $longitude1 - $longitude2;
$miles = (sin(deg2rad($latitude1)) * sin(deg2rad($latitude2))) + (cos(deg2rad($latitude1)) * cos(deg2rad($latitude2)) * cos(deg2rad($theta)));
$miles = acos($miles);
$miles = rad2deg($miles);
$miles = $miles * 60 * 1.1515;
$feet = $miles * 5280;
$yards = $feet / 3;
$kilometers = $miles * 1.609344;
$meters = $kilometers * 1000;
return compact('miles', 'feet', 'yards', 'kilometers', 'meters');
}
<?php
$point1 = array('lat' => 40.770623, 'long' => -73.964367);
$point2 = array('lat' => 40.758224, 'long' => -73.917404);
$distance = getDistanceBetweenPointsNew($point1['lat'], $point1['long'], $point2['lat'], $point2['long']);
foreach ($distance as $unit => $value) {
echo $unit . ': ' . number_format($value, 4) . '<br />';
}
?>
<?php
function getTweets($hash_tag)
{
$url = 'http://search.twitter.com/search.atom?q=' . urlencode($hash_tag);
echo "<p>Connecting to <strong>$url</strong> ...</p>";
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
$xml = curl_exec($ch);
curl_close($ch);
//If you want to see the response from Twitter, uncomment this next part out: //echo "<p>Response:</p>"; //echo "<pre>".htmlspecialchars($xml)."</pre>"; $affected = 0;
$twelement = new SimpleXMLElement($xml);
foreach ($twelement->entry as $entry) {
$text = trim($entry->title);
$author = trim($entry->author->name);
$time = strtotime($entry->published);
$id = $entry->id;
echo "<p>Tweet from " . $author . ": <strong>" . $text . "</strong> <em>Posted " . date('n/j/y g:i a', $time) . "</em></p>";
}
return true;
}
<?php
function ordinal($cdnl)
{
$test_c = abs($cdnl) % 10;
$ext = ((abs($cdnl) % 100 < 21 && abs($cdnl) % 100 > 4) ? 'th'
: (($test_c < 4) ? ($test_c < 3) ? ($test_c < 2) ? ($test_c < 1)
? 'th' : 'st' : 'nd' : 'rd' : 'th'));
return $cdnl . $ext;
}
语法:
<?php
$number = 10;
echo ordinal($number); //output is 10th
?>
<?php // local file that should be send to the client
$local_file = 'test-file.zip'; // filename that the user gets as default
$download_file = 'your-download-name.zip';
// set the download rate limit (=> 20,5 kb/s)
$download_rate = 20.5;
if(file_exists($local_file) && is_file($local_file)) {
// send headers header('Cache-control: private');
header('Content-Type: application/octet-stream');
header('Content-Length: '.filesize($local_file));
header('Content-Disposition: filename='.$download_file);
// flush content flush();
// open file stream $file = fopen($local_file, "r");
while(!feof($file)) {
// send the current file part to the browser print fread($file, round($download_rate * 1024));
// flush the content to the browser flush();
// sleep one second sleep(1);
}
// close file stream fclose($file);} else {
die('Error: The file '.$local_file.' does not exist!');
}
?>
<?php
header("Content-type: image/png");
$string = $_GET['text'];
$im = imagecreatefrompng("images/button.png");
$color = imagecolorallocate($im, 255, 255, 255);
$px = (imagesx($im) - 7.5 * strlen($string)) / 2;
$py = 9;
$fontSize = 1;
imagestring($im, fontSize, $px, $py, $string, $color);
imagepng($im);
imagedestroy($im);
?>
<?php
function remote_filesize($url, $user = "", $pw = "")
{
ob_start();
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_NOBODY, 1);
if (!empty($user) && !empty($pw)) {
$headers = array('Authorization: Basic ' . base64_encode("$user:$pw"));
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
}
$ok = curl_exec($ch);
curl_close($ch);
$head = ob_get_contents();
ob_end_clean();
$regex = '/Content-Length:\s([0-9].+?)\s/';
$count = preg_match($regex, $head, $matches);
return isset($matches[1]) ? $matches[1] : "unknown";
}
语法:
<?php
$file = "http://koonk.com/images/logo.png";
$size = remote_filesize($url);
echo $size;
?>
<?php
$pdf_file = './pdf/demo.pdf';
$save_to = './jpg/demo.jpg'; //make sure that apache has permissions to write in this folder! (common problem)
//execute ImageMagick command 'convert' and convert PDF to JPG with applied settings
exec('convert "'.$pdf_file.'" -colorspace RGB -resize 800 "'.$save_to.'"', $output, $return_var);
if($return_var == 0) { //if exec successfuly converted pdf to jpg
print "Conversion OK";
} else{
print "Conversion failed.<br />".$output;
}
?>
function get_tiny_url($url)
{
$ch = curl_init();
$timeout = 5;
curl_setopt($ch,CURLOPT_URL,'http://tinyurl.com/api-create.php?url='.$url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
语法:
<?php
$url = "http://blog.koonk.com/2015/07/Hello-World";
$tinyurl = get_tiny_url($url);
echo $tinyurl;
?>
使用下面的 PHP 片段可以让你的用户下载 Youtube 视频
<?php
function str_between($string, $start, $end)
{
$string = " " . $string;
$ini = strpos($string, $start);
if ($ini == 0) return "";
$ini += strlen($start);
$len = strpos($string, $end, $ini) - $ini;
return substr($string, $ini, $len);
}
function get_youtube_download_link()
{
$youtube_link = $_GET['youtube'];
$youtube_page = file_get_contents($youtube_link);
$v_id = str_between($youtube_page, "&video_id=", "&");
$t_id = str_between($youtube_page, "&t=", "&");
$flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id";
$hq_flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=6";
$mp4_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=18";
$threegp_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=17";
echo "\t\tDownload (right-click > save as):\n\t\t";
echo "<a href=\"$flv_link\">FLV</a>\n\t\t";
echo "<a href=\"$hq_flv_link\">HQ FLV (if available)</a>\n\t\t";
echo "<a href=\"$mp4_link\">MP4</a>\n\t\t";
echo "<a href=\"$threegp_link\">3GP</a><br><br>\n";
}
<?php
function nicetime($date)
{
if (empty($date)) {
return "No date provided";
}
$periods = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
$lengths = array("60", "60", "24", "7", "4.35", "12", "10");
$now = time();
$unix_date = strtotime($date);
// check validity of date
if(empty($unix_date)) {
return "Bad date";
}
// is it future date or past date
if($now > $unix_date) {
$difference = $now - $unix_date;
$tense = "ago";
} else {
$difference = $unix_date - $now;
$tense = "from now";
}
for ($j = 0; $difference >= $lengths[$j] && $j < count($lengths) - 1; $j++) {
$difference /= $lengths[$j];
}
$difference = round($difference);
if ($difference != 1) {
$periods[$j] .= "s";
}
return "$difference $periods[$j] {$tense}";
}
语法:
<?php
$date = "2015-07-05 03:45";
$result = nicetime($date); // 2 days ago
?>