This function outputs a string that is filename friendly. It removes all non-characters and punctuation from the input and converts to lowercase. I find this useful for seo friendly cms pages. This function is still being tweaked so any improvements would be most appreciated.
function checkCharacters($title) {
$final_text = ”;
$title = strtolower(trim(stripslashes($title)));
for ($i = 0; $i < strlen($title); $i++) {
$letter = substr($title,$i,1);
$ascii = ord($letter);
if (($ascii >= 97 && $ascii <= 122) || ($ascii>=48 && $ascii <= 57))
{
$final_text .= $letter;
}
else
{
$final_text .= "-";
}
return $final_text;
}
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