代码审计基础之天钧式唠叨(二)

 echo

 $var = 5;
 if($var>0){
     echo"1";
 }elseif($var>0 && $var<5){
     echo"2";
 }elseif($var >=5 && $var <10){
     echo"3";
 }

 <?php
     $var = S;if($var <0){  
     //do someting    
     echo "1";
     }elseif($var >0 && $var <5){
         //do someting    
         echo"2";} elseif($var >=5 &&$var < 10){    
         //do someting    echo"3";}  
         ?>

 print_r,var_dump,debag_zval_dump

 <?php
 $arr = array(
     "key1" => true,
     "key2"=> "test",
     "key3" => "100",
     "key4" => null,);
 print_r($arr)
 ?>

 var_dump

 <?php
 $arr = array(
     "key1" => true,
     "key2"=> "test",
     "key3" => "100",
     "key4" => null,);
 var_dump($arr)
 ?>

 <?php
 $arr = array(
     "key1" => true,
     "key2"=> "test",
     "key3" => "100",
     "key4" => null,);
 debug_zval_dump($arr)
 ?>

 <?php
 function a(){
     b();
 }
 function b(){
     c();
 }
 function c(){
     debug_print_backtrace();
 }
 a();
 ?>

 #0 c() called at [I:\PHPstudy\PHPTutorial\WWW\text.php:6] #1 b() called at [I:\PHPstudy\PHPTutorial\WWW\text.php:3] #2 a() called at [I:\PHPstudy\PHPTutorial\WWW\text.php:11]

 <?php
 echo"天钧";
 echo"渗透云笔记";
 exit()
 echo"工作室老大是gay";
 ?>

 [xdebug]
 zend_extension=php_xdebug-2.5.4-5.6-vc11-nts.dll
 xdebug.profiler_append = 0
 xdebug.profiler_enable = 1
 xdebug.profiler_enable_trigger = 0
 xdebug.profiler_output_dir ="I:\phpStudy\tmp\xdebug"
 xdebug.trace_output_dir ="I:\phpStudy\tmp\xdebug"
 xdebug.profiler_output_name = "cache.out.%t-%s"
 xdebug.remote_enable = 1
 xdebug.remote_handler = "dbgp"
 xdebug.remote_host = "127.0.0.1"
 xdebug.remote_port = 9999
 xdebug.remote_mode = "req"
 xdebug.idekey = PHPSTORM

 I:\PHPstudy\PHPTutorial\php\php-5.6.27-nts\ext

 Waiting for incoming connection with ide key