[SOLVED] Determine if Characters are in a Variable

[JSHINER]

I know there's a function for this I just can't think of it... been going nonstop for way too long on this project...

 

$invalidCharacters = array(".", "~", "`", "!", "@", "#", "$", "%", "^", "&", "*", "(", ")", "+", "=", "{", "}", "[", "]", "|", "/", "'", ":", ";", ">", "<", ".", ",");

 

How can I do something for if an $invalidCharacter is found in $variable, it returns something.

 

[genericnumber1]

There might be a more efficient way, but...

 

<?php
$invalidCharacters = array(".", "~", "`", "!", "@", "#", "$", "%", "^", "&", "*", "(", ")", "+", "=", "{", "}", "[", "]", "|", "/", "'", ":", ";", ">", "<", ".", ",");
$string = 'blahblah';
foreach($invalidCharacters as &$char) {
    if(strpos($string, $char) !== false) {
        echo 'Invalid character found.';
    }
}
?>

[Mark Baker]

if ($string == $str_replace($invalidCharacters,'',$string)) {
   //  valid
} else {
   // $string contains one or more invalid characters
}