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PHP strtolower() Function

The strtolower() function in PHP is used to convert a string to lowercase.

This function is binary-safe. The related functions are as follows:

  • strtoupper()
  • lcfirst()
  • ucfirst()
  • ucwords()

Syntax

strtolower ( string $string )

Parameter

string(required)- This parameter represents the input string.

Return

This function returns a string with all alphabetic characters converted to lowercase.

Example 1

Output

Actual String: PHP is an easy language to learn.
 After strtolower() function...
 New string: php is an easy language to learn.

Example 2

Output

email id: Reema@TutoRialAndExample.COM
After strtolower() function...
email id: reema@tutorialandexample.com

Example 3

Output

email id: 
After strtolower() function...
email id:

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