CODEWITHSUNDEEP
phpregex
user311497
user311497

Reputation: 11

regex with special characters in php

I'm trying to preg_replace charset=blablabla; and charset=blablabla" with charset=utf-8; and charset=utf-8". Please see ; = and " characters, and of course searched string can be lower/uppercase.

Can you help me?

Upvotes: 0

Views: 174

Answers (2)

salathe
salathe

Reputation: 51950

You could replace the value with something like:

$subject = 'Testing... charset=baz; and charset=bat" :-)';
echo preg_replace('/(?<=charset=)[a-zA-Z0-9_-]+(?=[;"])/', 'utf-8', $subject);
// Testing... charset=utf-8; and charset=utf-8" :-)

Deconstructed, the regex matches:

  • A point immediately following charset= (using a lookbehind)
  • A sequence of one or more alphanumeric, underscore or hyphen characters (to be replaced)
  • If followed by either a semicolon or double quote character

Upvotes: 1

Chris Gutierrez
Chris Gutierrez

Reputation: 4755

You could try something like this.

echo preg_replace("#charset=[a-zA-Z0-9]+(\;)?#", "charset=utf-8$1", "charset=sdfsfsds");

Upvotes: 0

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