$path = str_replace(‘//’, ‘/’,__FILE__); echo $path.’<br />’; function extname1($path) { returnstrrchr($path, ‘.’); } function extname2($path) { $position =strrpos($path, ‘.’); returnsubstr($path, $position); } function extname3($path) { $arr =explode(‘.’, $path); return$arr[count($arr) - 1]; } function extname4($path) { preg_match_all(‘/[/w///:/-]+/.([/w]+)$/’, $path, $out); return$out[1][0]; } function extname5($path) { returnpreg_replace(‘/^[^/.]+/.([/w]+)$/’, ‘${1}’, basename($path)); } print_r(extname5($path));
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