Do multiple search and replaces in PHP string?

Question

I am working with PHP and WordPress right now, I need to basically run the below code to Replace text in $current_path with the text in $new_path if $current_path EXIST in $content

I would prefer to be able to iterate over an array instead of running this over and over like this, or any better method would be nice?

$content = 'www.domain.com/news-tag/newstaghere'

$current_path = 'test-tag';
$new_path = 'test/tag';
$content = str_replace($current_path, $new_path, $content);

$current_path = 'news-tag';
$new_path = 'news/tag';
$content = str_replace($current_path, $new_path, $content);

$current_path = 'ppc-tag';
$new_path = 'ppc/tag';
$content = str_replace($current_path, $new_path, $content);

check: arrays using in php.net/manual/en/function.str-replace.php — Jirka Kopřiva
– Jirka Kopřiva, Commented Apr 29, 2013 at 1:09

Francis Avila · Accepted Answer · 2013-04-29 01:16:43Z

2

str_replace() accepts array arguments:

$current_paths = array('test-tag','news-tag','ppc-tag');
$new_paths = array('test/tag','news/tag','ppc/tag');
$new_content = str_replace($current_paths, $new_paths, $content);

Or you can use a single array with strtr():

$path_map = array('test-tag'=>'test/tag', 'news-tag'=>'news/tag', 'ppc-tag'=>'ppc/tag');
$new_content = strtr($content, $path_map);

However, you seem to be doing something very generic. Maybe all you need is a regex?

$new_content = preg_replace('/(test|news|ppc)-(tag)/u', '\1/\2', $content);

Or maybe even just

$new_content = preg_replace('/(\w+)-(tag)/u', '\1/\2', $content);

answered Apr 29, 2013 at 1:16

Francis Avila

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Mark Parnell · Accepted Answer · 2013-04-29 01:10:38Z

2

$content = 'www.domain.com/news-tag/newstaghere'

$current_paths = array('test-tag','news-tag','ppc-tag');
$new_paths = array('test/tag','news/tag','ppc/tag';
$content = str_replace($current_paths, $new_paths, $content);

answered Apr 29, 2013 at 1:10

Mark Parnell

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HartleySan · Accepted Answer · 2013-04-29 01:10:08Z

0

Array arguments can be provided for the str_replace function, as noted on the following PHP.net page:
http://php.net/manual/en/function.str-replace.php

Please see "Example #2" on the page linked above for details.

answered Apr 29, 2013 at 1:10

HartleySan

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Casimir et Hippolyte · Accepted Answer · 2013-04-29 01:20:05Z

0

You can do that:

$content = 'www.domain.com/news-tag/newstaghere';
$content = preg_replace('~www\.domain\.com/\w++\K-(?=tag/)~', '/', $content);

answered Apr 29, 2013 at 1:20

Casimir et Hippolyte

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