php开发中常用的几个技巧

foreach ($tags as $tag) {
    $tag["name"] = "new name";
}

//解决方法一:使用 array item 引用
foreach ($tags as &$tag) {

    $tag["name"] = "new name";
}

//解决方法二
foreach ($tags as $index => $tag) {
    $tags[$index]["name"] = "new name";
}

$tags = explode(",", $tags_str);

>>> $tags_str = "php, Kotlin， 安卓, 网站";
=> "php, Kotlin， 安卓, 网站"
>>> preg_split( "/(,|，)/", $tags_str);
=> [
     "php",
     " Kotlin",
     " 安卓",
     " 网站",
   ]