SunshinePHP Developer Conference 2015

str_repeat

(PHP 4, PHP 5)

str_repeatВозвращает повторяющуюся строку

Описание

string str_repeat ( string $input , int $multiplier )

Возвращает строку input, повторенную multiplier раз.

Список параметров

input

Повторяемая строка.

multiplier

Количество раз, которые нужно повторить строку input.

multiplier должен быть больше или равен нулю. Если он равен нулю, возвращается пустая строка.

Возвращаемые значения

Возвращает повторяющуюся строку.

Примеры

Пример #1 Пример использования str_repeat()

<?php
echo str_repeat("-="10);
?>

Результат выполнения данного примера:

-=-=-=-=-=-=-=-=-=-=

Смотрите также

  • for
  • str_pad() - Дополняет строку другой строкой до заданной длины
  • substr_count() - Возвращает число вхождений подстроки

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User Contributed Notes 7 notes

up
2
claude dot pache at gmail dot com
5 years ago
Here is a shorter version of Kees van Dieren's function below, which is moreover compatible with the syntax of str_repeat:

<?php
function str_repeat_extended($input, $multiplier, $separator='')
{
    return
$multiplier==0 ? '' : str_repeat($input.$separator, $multiplier-1).$input;
}
?>
up
3
Anonymous
2 years ago
hi guys ,
i've faced this example :
<?php

$my_head
= str_repeat("°~", 35);
echo
$my_head;

?>

so , the length should be 35x2 = 70 !!!
if we echo it :

<?php
$my_head
= str_repeat("°~", 35);
echo
strlen($my_head); // 105
echo mb_strlen($my_head, 'UTF-8'); // 70
?>

be carefull with characters and try to use mb_* package to make sure everything goes well ...
up
1
Alper Kaya
7 years ago
If you want to hide a part of your password, you can use this code. It's very simple and might be required in your user management panel.

<?php
$password
= "12345abcdef";
$visibleLength = 4; // 4 chars from the beginning

echo substr($password,0,4).str_repeat("*", (strlen($password)-$visibleLength));
?>
up
0
Anonymous
11 years ago
str_repeat does not repeat symbol with code 0 on some (maybe all?) systems (tested on PHP Version 4.3.2 , FreeBSD 4.8-STABLE i386 ).

Use <pre>
while(strlen($str) < $desired) $str .= chr(0);
</pre> to have string filled with zero-symbols.
up
-1
Damien Bezborodov
5 years ago
Here is a simple one liner to repeat a string multiple times with a separator:

<?php
implode
($separator, array_fill(0, $multiplier, $input));
?>

Example script:
<?php

// How I like to repeat a string using standard PHP functions
$input = 'bar';
$multiplier = 5;
$separator = ',';
print
implode($separator, array_fill(0, $multiplier, $input));
print
"\n";

// Say, this comes in handy with count() on an array that we want to use in an
// SQL query such as 'WHERE foo IN (...)'
$args = array('1', '2', '3');
print
implode(',', array_fill(0, count($args), '?'));
print
"\n";
?>

Example Output:
bar,bar,bar,bar,bar
?,?,?
up
-2
bryantSPAMw at geocities dot SPAM dot com
12 years ago
(For the benefit of those searching the website:)

This is the equivalent of Perl's "x" (repetition) operator, for eg.  str_repeat("blah", 8) in PHP does the same thing as "blah" x 8 in Perl.
up
-9
Anonymous
9 years ago
In reply to what Roland Knall wrote:

It is much simpler to use printf() or sprintf() for leading zeros.

<?php
   printf
("%05d<br>\n"1); // Will echo 00001
  
sprintf("%05d<br>\n"1); // Will return 00001
?>
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