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str_repeat

(PHP 4, PHP 5, PHP 7)

str_repeatRepeat a string

Descrierea

str_repeat ( string $string , int $times ) : string

Returns string repeated times times.

Parametri

string

The string to be repeated.

times

Number of time the string string should be repeated.

times has to be greater than or equal to 0. If the times is set to 0, the function will return an empty string.

Valorile întoarse

Returns the repeated string.

Exemple

Example #1 str_repeat() example

<?php
echo str_repeat("-="10);
?>

Exemplul de mai sus va afișa:

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

A se vedea și

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User Contributed Notes 5 notes

up
34
Damien Bezborodov
12 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
3
Anonymous
9 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
2
claude dot pache at gmail dot com
12 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
0
Alexander Ovsiyenko
3 years ago
http://php.net/manual/en/function.str-repeat.php#90555

Damien Bezborodov , yeah but execution time of your solution is 3-5 times worse than str_replace.

<?php

function spam($number) {
    return
str_repeat('test', $number);
}

function
spam2($number) {
    return
implode('', array_fill(0, $number, 'test'));
}

//echo spam(4);
$before = microtime(true);
for (
$i = 0; $i < 100000; $i++) {
   
spam(10);
}
echo
microtime(true) - $before , "\n"; // 0.010297
$before = microtime(true);
for (
$i = 0; $i < 100000; $i++) {
   
spam2(10);
}
echo
microtime(true) - $before; // 0.032104
up
-4
Anonymous
18 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.
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