CODEWITHSUNDEEP
php
Iter Ator
Iter Ator

Reputation: 9289

How to replace a string with a variable part?

I would like to replace each \x to $matches[x] where x is a number.

It works only for predefined numbers with str_replace:

str_replace( array(
    '\\1',
    '\\2',
    '\\3',
    '\\4'
), array(
    '$matches[1]',
    '$matches[2]',
    '$matches[3]',
    '$matches[4]'
), $string );

Upvotes: 1

Views: 41

Answers (1)

Anton Ohorodnyk
Anton Ohorodnyk

Reputation: 883

Use regular expression in preg_replace

Code:

<?php

$str = '\\2 string \\123 gogog \\123 sda \\342 \\3525 wqe \\234';
echo preg_replace('~(\\\\)(\d+)~', '$matches[$2]', $str);

Output:

$matches[2] string $matches[123] gogog $matches[123] sda $matches[342] $matches[3525] wqe $matches[234]

Upvotes: 1

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