PHP

PHP isset()和empty()的區別

isset判斷的是 "變數"

empty判斷的是 "值"

http://www.compileonline.com/execute_php_online.php

[PHP]紀錄程式執行時間

 function getMicrotime(){
  //microtime會回傳微秒及秒(msec sec)
  $arr = explode(" ",microtime());
  return $arr[0] + $arr[1];
 }
 
 //紀錄開始時間
 $start = getMicrotime();
 
 $str = "";
 for( $i = 0; $i <= 1000000 ; $i++) $str .= "Hello";
 //結束時間
 $end = getMicrotime();
 
 echo "程式執行了 " . ($end - $start) . "秒 " . (($end - $start) /60 ) . "分";;
?>

How to get file name from full path with PHP?

$file = basename($path);         // $file is set to "index.php"