Tag Archives: Server side validation

How to Remove Characters Except Numbers from a String ?

Following Code will remove all character,special characters including space.

$givenNumber = “1245fdfd8454D FDFDF434 3$#$#%”;

$testingNumber = preg_replace(‘[\D]’, ”, $givenNumber);

echo $testingNumber;

Output is : 124584544343


Validate Email in PHP

Use this function to validate email in PHP.

Pass your email in this function by calling it.if  it returns false then email is not valid else valid.

function checkEmail($email_address = null){
if(preg_match(“/^[a-zA-Z]*\w+(\.\w+)*\@\w+(\.[0-9a-zA-Z]+)*\.[a-zA-Z]{2,4}$/”, $email_address) === 0){
return false;
return true;