PHP: preg_replace with unique replacement

Question

I want to replace each instance of a given string with a number.

ex:

<?php

$string = "Hello Foo Text Apple"
preg_replace($pattern, $pattern.$i++, $string);

//output    
Hello0 Foo1 Text2 Apple3

?>

the $pattern is a regex query but in this case I have used plain text

Arnaud Le Blanc · Accepted Answer · 2011-01-29 17:21:51Z

2

If you are using PHP 5.3:

$string = "Hello Hello Hello Hello";
$i = 0;
preg_replace_callback($pattern, function($matches) use ($i) {
    return $matches[0].$i++;
}, $string);

answered Jan 29, 2011 at 17:21

Arnaud Le Blanc

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Comments

score 1 · Accepted Answer · 2011-01-29 17:41:47Z

1

$string = "Hello Hello Hello Test Hello Test";

$i = 0;
$string = preg_replace("/\w+/e", '$0 . $i++', $string);

answered Jan 29, 2011 at 17:21

user142162

Thanks, but the increments must not stop. eg. Hello1 Test2 Something3

@dany: Updated code. Set $i to what you want the count to start at.