find several words by regex criteria php

Question

I want to replace some strings by other one. I use below codes:

$mc = 'Hello I have these bages: [A-561],[A-123],[A-1],[A-5234]';
$medal = '<img src="1" />';
$bages = preg_replace('/^\[A-[0-9]+\]/i',$medal,$mc);
echo $bages

it prints out this:

Hello I have these bages: [A-561],[A-123],[A-1],[A-5234]

and if i change $mc to

$mc = "[A-561],[A-123],[A-1],[A-5234]";

then prints out:

<img src="1" />,[A-123],[A-1],[A-5234]

I have no idea why it happens like this. i want to change all of them to my replace string.

You have an `^` in your regex. Do you know what it means? * See also [Open source RegexBuddy alternatives](http://stackoverflow.com/questions/89718/is-there) and [Online regex testing](http://stackoverflow.com/questions/32282/regex-testing) for some helpful tools, or [RegExp.info](http://regular-expressions.info/) for a nicer tutorial. — mario, Oct 23 '12 at 20:21

score 3 · Accepted Answer · answered Oct 23 '12 at 20:21

3

The ^ in your regex makes the regex only match on the start of a string.

Remove that ^ from the regex:

$bages = preg_replace('/\[A-[0-9]+\]/i',$medal,$mc);

answered Oct 23 '12 at 20:21

Khôi

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find several words by regex criteria php

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