This article mainly shares with you how to obtain the file suffix in PHP. I hope it can help you.
<?php //方法一: function extend_1($file_name) { $retval=""; $pt=strrpos($file_name, "."); if ($pt) $retval=substr($file_name, $pt+1, strlen($file_name) - $pt); return ($retval); } //方法二 function extend_2($file_name) { $extend = pathinfo($file_name); $extend = strtolower($extend["extension"]); return $extend; } //方法三 function extend_3($file_name) { $extend =explode("." , $file_name); $va=count($extend)-1; return $extend[$va]; } ?>
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