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PHP | ctype_alpha() Function

PHP ctype_alpha() Function

Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP ctype_alpha() Function.

The built-in ctype_alpha() function checks if all the characters in the given string, text are alphabetic.


Following below is the syntax to use this function -

ctype_alpha ( $text );

Parameter Details

Sr.NoParameters & Description


The tested string.

Return Value

This built-in function returns TRUE if every character in the text is a letter, otherwise it returns FALSE.


Try out the below example -

   $strings = array('example', 'example1234');
   foreach ($strings as $test) {
      if (ctype_alpha($test)) {
         echo "$test consists of all letters. \n";
      }else {
         echo "$test does not have all letters. \n";


When the above code is executed, it will produce the following result -

example consists of all letters.
example1234 does not have all letters.

Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the PHP ctype_cntrl() Function.

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