Categories: PHP

ltrim – PHP String Functions

Syntax :

ltrim ( string, charlist );

Description :

ltrim() function will truncate spaces or other characters from starting of input string. We can remove “hi” from the starting of input string “hi from tutorialmines.” by this function.

Parameter :

string – This is a Required parameter. This is a string on which function will be performed.
charlist – This is an Optional parameter. If you wont use the second parameter, ltrim() will strip below characters:

The following characters are removed if the charlist parameter is empty:

“\0” – NULL
“\t” – tab
“\n” – new line
“\r” – carriage return
” ” – ordinary white space
“\x0B” – vertical tab

Output :

This will return a trimmed string.

Related articles : trim , rtrim.

ltrim() – PHP Functions Example 1 :

<?php
// below statement will trim white spaces from left side of string."
$strExample = " Hi from tutorialmines!"; 
echo ltrim($strExample);
?>

Try it Editor

In above example ,We have a string “Hi from tutorialmines! “. Now this function will trim blank spaces from left side of string. Output of above code in the browser is as below:

Hi from tutorialmines!

ltrim() – PHP Functions Example 2 :

<?php
// below statement will trim white spaces from left side of string."
$strExample = " \nHi from \ntutorialmines.\n\n";
echo ltrim($strExample);
?>

Try it Editor

In above example ,We have a string ‘ \nHi from \ntutorialmines.\n\n ‘. Now this function will trim blank spaces from left side of string. Output in ViewSource of browser is below ( HTML output of the code above):

<html><head></head><body>
Hi from 
tutorialmines.

 
</body></html>

See below is the output of above code.

Hi from tutorialmines.

ltrim() – PHP Functions Example 3 : Using charlist parameter.

<?php
$strExample = "Hi from tutorialmines. This is a example of ltrim() function. Testing parameter."; 
echo ltrim($strExample,"Hi");
?>

Try it Editor

In above example ,We have a string ‘Hi from tutorialmines. This is a example of trim() function. Testing parameter.’. Now this function remove “Hi” from the starting of string. See below is the output of above code.

from tutorialmines. This is a example of ltrim() function. Testing parameter.

ltrim() – PHP Functions Example 4 : Using charlist parameter with (..) specifying range of characters.

<?php
$strExample = "3579Hi from tutorialmines. This is a example of ltrim() function. Testing parameter."; 
echo ltrim($strExample,"A..Za..z0..9");
?>

Try it Editor

In above example ,We have a string ‘3579Hi from tutorialmines. This is a example of ltrim() function. Testing parameter.’. Now this function remove “3579Hi” character from the starting of string by using range of characters with .. operator.

0..9 – it will remove numbers from 0-9 from left side.
a..z – it will remove LOWERCASE alphabets from a to z from left side.
A..Z – it will remove UPPERCASE alphabets from A to Z from left side.

See below is the output of above code.

from tutorialmines. This is a example of ltrim() function. Testing parameter.

7 years ago

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