[andyd34]

A simple ereg to check only alpha numeric character are entered

PHP Code:

$text = "onlyalphanumericcharacters012345";

if (ereg('[^A-Za-z0-9]', $text)) {
  echo "This contains characters other than letters and numbers";
}
else {
  echo "This contains only letters and numbers";    
} 


[n00b 0wna]

Nice! This is very usefull