Three kinds of Get file extension PHP tutorial code
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<?php Method One: function Extend_1 ($file _name) { $retval = ""; $pt =strrpos ($file _name, "."); if ($pt) $retval =substr ($file _name, $pt +1, strlen ($file _name)-$pt); return ($retval); } <?php//Method One: function Extend_1 ($file _name) {$retval = ""; $pt =strrpos ($file _name, "."); if ($pt) $retval =substr ($file _ Name, $pt +1, strlen ($file _name)-$pt); return ($retval); }
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Method Two
PHP code
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function Extend_2 ($file _name) { $extend = PathInfo ($file _name); $extend = Strtolower ($extend ["extension"]); return $extend; } function Extend_2 ($file _name) {$extend = PathInfo ($file _name); $extend = Strtolower ($extend ["extension"]); Extend }
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Method Three
PHP code
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function Extend_3 ($file _name) { $extend =explode (".", $file _name); $va =count ($extend)-1; return $extend [$va]; } function Extend_3 ($file _name) {$extend =explode (".", $file _name); $va =count ($extend)-1; return $extend [$va];}
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Method Four
PHP code
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function Getfileext ($file _name) { while ($dot = Strpos ($file _name, ".")) { $file _name = substr ($file _name, $dot + 1); } Return $ file_name; } ?> Function Getfileext ($file _name) {while ($dot = Strpos ($fi Le_name, ".") {$file _name = substr ($file _name, $dot + 1);} return $file _name; |