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<?php
ereg('[^A-Za-z0-9]', $dirName)
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<?php
ereg('[^A-Za-z0-9]', $dirName)
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preg_match('#^[A-Za-z0-9_ ]*$#',$string)Code: Select all
preg_match('#^[A-Za-z0-9_ ]+$#',$string)