PHP Find file contents under folder

<?php <pre name= "code" class= "PHP" >error_reporting (0);//This is best added because File_get_contents encountered a directory error

$key =$_get[' key ']; $dir =dirname (__file__); $file =scandir ($dir); foreach ($file as $f) {$tmp =file_get_contents ($f, 1024 *100), if (Stripos ($tmp, $key)) echo $f. " <br> ";}? >

You can also do this: (based on regular expression matching)

<?phperror_reporting (0); $key =$_get[' key '; $dir =dirname (__file__); $file =scandir ($dir); foreach ($file as $f) {$ Tmp=file_get_contents ($f, 1024*100); if (Preg_match ("/". $key. " /", $tmp)) echo $f." <br> ";//Note add the front and back two slash or it will go wrong}?>

PHP Find file contents under folder