strtolower(): to change all upper case chars to lower case

$my_str="Hello welcome to plus2net.com";
$my_str=strtolower($my_str);
echo $my_str;

hello welcome to plus2net.com

$val=strtolower($input_sting);

DEMO

Example 1: Converting Mixed Case String

<?php
$str = "HELLO World!";
echo strtolower($str);  // Output: hello world!
?>

Example 2: Handling String with Numbers

<?php
$str = "PHP 101: Programming";
echo strtolower($str);  // Output: php 101: programming
?>

Example 3: Converting a Sentence with Mixed Characters

<?php
$str = "PHP is Fun, but ALSO CHALLENGING!";
echo strtolower($str);  // Output: php is fun, but also challenging!
?>

Example 4: Converting a Multi-Line String

<?php
$str = "This is LINE 1\nTHIS IS LINE 2\n";
echo strtolower($str);  // Output: this is line 1\nthis is line 2\n
?>

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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