strtoupper – PHP String Functions

Syntax :

Description :

strtoupper() function will take string as input and converts all letter to uppercase letter, if that character is alphabetic.

Parameter :

• string – This is a Required parameter. This is a string on which function will be performed.

Output :

This will return a Uppercased string.

Related articles : ucwords(), strtolower(), ucfirst(), lcfirst().

strtoupper() – PHP Functions Example 1 :

<?php
$strExample = "An EXAMPLE of a strtoupper() function.";
echo strtoupper($strExample);
?>

In above example ,We have a string ‘An EXAMPLE of a strtoupper() function’. Now this function will converts every letter in a string to uppercase. See below is the output of above code.

strtoupper() – PHP Functions Example 2 :

<?php
$strExample = "AN Example Of A strtoupper() function WITH 789789.";
echo strtoupper($strExample);
?>

In above example ,We have a string ‘AN Example Of A strtoupper() function WITH 789789.’. Now this function will converts every first letter in a string to uppercase, it will not do anything with numeric numbers. See below is the output of above code.