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PHP strtoupper() Function
Topic: PHP String ReferencePrev|Next
Description
The strtoupper() function converts a string to uppercase.
The following table summarizes the technical details of this function.
| Return Value: | Returns the modified string. |
|---|---|
| Version: | PHP 4+ |
Syntax
The basic syntax of the strtoupper() function is given with:
strtoupper(string);
The following example shows the strtoupper() function in action.
Example
Run this code »<?php
// Sample string
$str = "Hello WORLD!";
// Making the string uppercase
echo strtoupper($str);
?>Here's a list of the functions related to strtoupper() function:
lcfirst()– Converts the first character of a string to lowercase.ucfirst()– Converts the first character of a string to uppercase.ucwords()– Converts the first character of each word in a string to uppercase.strtolower()– Converts a string to lowercase.
Parameters
The strtoupper() function accepts the following parameters.
| Parameter | Description |
|---|---|
| string | Required. Specifies the string to work on. |
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