strtolower() Make a string lowercase
Learn how to force a string value to lowercase.
strtolower() function converts all the uppercase characters of a string to lowercase.
This function only affects the alphabets and other characters remain same.
strtolower() prototype
This means thatstring strtolower ( string $str )
strtolower() accepts string and returns the lowercased string (lowercased the all alphabetic characters).
We could rewrite the above function definition in an easy to understandable way:
| Function Part | Description |
|---|---|
| string | Type of value this function returns, which is a string, in this case returns the uppercased string. |
| strtolower | The function name |
| string | Parameter type, this function accepts only string data type |
| $str | Parameter name, a variable that holds the data |
Syntax
strtolower($str)
Return Value
strtolower() function returns string, with lowercased all the alphabetic characters.
Examples
Example 1
<?php
$str = 'I AM PHP string';
//lowercase entire string
$Lowercase = strtolower($str);
echo $Lowercase;
?>
The above code prints i am php string on browser screen.
