我们的生活比蜜甜

2009-08-13

PHP Tips，留着以后备用（3） - [php]

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//取函数后缀名
<?php 
$file_name = "course_notice.mp3.rar"; //名字是随便起的 
$extend = explode(".",$file_name); 
$extend_id = count($extend)-1; 
$extend_name = $extend[$extend_id]; 
echo($extend_name); 
?> 
 
<?php 
$file_name = "course_notice.mp3.rar"; 
$pt = strrpos($file_name,".")+1; 
$extend_name = substr($file_name,$pt); 
echo($extend_name); 
?> 
 
<?php 
$file_name = "course_notice.mp3.rar"; 
$extend_name = substr(strrchr($file_name,"."),1); 
echo($extend_name); 
?> 
 
<?php 
$file_name = "course_notice.mp3.rar"; 
$extend = pathinfo($file_name); 
$extend_name = $extend['extension']; 
echo($extend_name); 
?>