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PHP ltrim() Function

PHP String Reference PHP String Reference

Example

Remove characters from the left side of a string:

<?php
$str = "Hello World!";
echo $str . "<br>";
echo ltrim($str,"Hello");
?>

Run example »

Definition and Usage

The ltrim() function removes whitespace or other predefined characters from the left side of a string.

Related functions:

  • rtrim() - Removes whitespace or other predefined characters from the right side of a string
  • trim() - Removes whitespace or other predefined characters from both sides of a string

Syntax

ltrim(string,charlist)

Parameter Description
string Required. Specifies the string to check
charlist Optional. Specifies which characters to remove from the string. If omitted, all of the following characters are removed:
  • "\0" - NULL
  • "\t" - tab
  • "\n" - new line
  • "\x0B" - vertical tab
  • "\r" - carriage return
  • " " - ordinary white space

Technical Details

Return Value: Returns the modified string
PHP Version: 4+
Changelog: The charlist parameter was added in PHP 4.1


More Examples

Example 1

Remove whitespaces from the left side of a string:

<?php
$str = "    Hello World!";
echo "Without ltrim: " . $str;
echo "<br>";
echo "With ltrim: " . ltrim($str);
?>

The HTML output of the code above will be (View Source):

<!DOCTYPE html>
<html>
<body>

Without ltrim:    Hello World!<br>With ltrim: Hello World!
</body>
</html>

The browser output of the code above will be:

Without ltrim: Hello World!
With ltrim: Hello World!

Run example »

Example 2

Remove newlines (\n) from the left side of a string:

<?php
$str = "\n\n\nHello World!";
echo "Without ltrim: " . $str;
echo "<br>";
echo "With ltrim: " . ltrim($str);
?>

The HTML output of the code above will be (View Source):

<!DOCTYPE html>
<html>
<body>

Without ltrim:


Hello World!<br>With ltrim: Hello World!
</body>
</html>

The browser output of the code above will be:

Without ltrim: Hello World!
With ltrim: Hello World!

Run example »


PHP String Reference PHP String Reference

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