array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'uk', ), 'this' => array ( 0 => 'function.ltrim.php', 1 => 'ltrim', 2 => 'Strip whitespace (or other characters) from the beginning of a string', ), 'up' => array ( 0 => 'ref.strings.php', 1 => 'String Функції', ), 'prev' => array ( 0 => 'function.localeconv.php', 1 => 'localeconv', ), 'next' => array ( 0 => 'function.md5.php', 1 => 'md5', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/strings/functions/ltrim.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>
(PHP 4, PHP 5, PHP 7, PHP 8)
ltrim — Strip whitespace (or other characters) from the beginning of a string
Strip whitespace (or other characters) from the beginning of a string.
Without the second parameter, mb_ltrim() will strip these characters:
" ": символ ASCII
SP 0x20, звичайний пропуск.
"\t": символ ASCII
HT 0x09, табуляція.
"\n": символ ASCII
LF 0x0A, новий рядок.
"\r": символ ASCII
CR 0x0D, повернення каретки.
"\0": символ ASCII
NUL 0x00, NUL-байт.
"\v": символ ASCII
VT 0x0B, вертикальна табуляція.
stringcharacterscharacters. Необхідно просто записати туди
усі непотрібні символи. За допомогою .. можна задати
діапазон символів за зростанням.
This function returns a string with whitespace stripped from the
beginning of string.
Приклад #1 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);
?>Поданий вище приклад виведе:
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 "