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PHP : Function Reference : String Functions : ltrim

ltrim

Strip whitespace (or other characters) from the beginning of a string (PHP 4, PHP 5)
string ltrim ( string str [, string charlist] )

Example 2419. Usage example of ltrim()

<?php

$text
= "\t\tThese are a few words :) ...  ";
$binary = "\x09Example string\x0A";
$hello  = "Hello World";
var_dump($text, $binary, $hello);

print
"\n";


$trimmed = ltrim($text);
var_dump($trimmed);

$trimmed = ltrim($text, " \t.");
var_dump($trimmed);

$trimmed = ltrim($hello, "Hdle");
var_dump($trimmed);

// trim the ASCII control characters at the beginning of $binary
// (from 0 to 31 inclusive)
$clean = ltrim($binary, "\x00..\x1F");
var_dump($clean);

?>

The above example will output:

string(32) "        These are a few words :) ...  "
string(16) "    Example string
"
string(11) "Hello World"

string(30) "These are a few words :) ...  "
string(30) "These are a few words :) ...  "
string(7) "o World"
string(15) "Example string
"

Related Examples ( Source code ) » ltrim






Code Examples / Notes » ltrim

john sherwood

To remove leading/trailing zeroes (example: "0123.4560"), doing a += 0 is easier than trim tricks.

jan

if you have a numer like 0310, don't use this code:
$number = '0310';
$number = ltrim( $number, "\0x30" );
echo $number;
output: 10
for a correct output use:
$number = '0310';
$number = ltrim( $number, "0" );
echo $number;
output: 310
the "\0x30" works only with the first 32 ascii characters


draugluin izzat bigfoot dizzot com

A fast way to get a file extension:
$ext = ltrim(strrchr($filename,'.'),'.');


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