Blog : PHP ltrim() Function

PHP ltrim() Function

--------------------------------------------------------------------------------
 Complete PHP String Reference
--------------------------------------------------------------------------------

Definition and Usage
The ltrim() function will remove whitespaces or other predefined character from the left side 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
 


--------------------------------------------------------------------------------

Example 1


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

 

The browser output of the code above will be:

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

If you select "View source" in the browser window, you will see the following HTML:



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

 


--------------------------------------------------------------------------------

Example 2
$str = "\r\nHello World!";
echo "Without ltrim: " . $str;
echo "
";
echo "With ltrim: " . ltrim($str);
?>  

The browser output of the code above will be:

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

If you select "View source" in the browser window, you will see the following HTML:



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