CODEWITHSUNDEEP
phpregexpreg-matchpreg-match-all
user3764374
user3764374

Reputation: 41

Match jquery function by reqular expression in php

I have a file which has jquery codes into the head section, like following..

<head>
<script>
$(document).ready(function(){
    $('.x').click(function(){
        // some thing
    });
    $('.y').click(function(){
        // some thing
    });
});
</script>
</head>

I want to use PHP to read the file and retrieve the content that are located inside the $(document).ready(function(){ section by using regular expression like preg_match_all. More specifically saying I need the two .click functions. Purpose is academic only. Any help will be appreciated.

Upvotes: 0

Views: 189

Answers (2)

Quixrick
Quixrick

Reputation: 3200

What about something like this?

\$\((?!document\).ready).*?\}\);

Here's what this expression does:

  • \$\( - This looks for a literal dollar sign $ followed by an opening parenthesis (.
  • (?!document\).ready) - This is a negative lookahead that says document).ready cannot be following the $(.
  • .*? - The dot . allows any character to be matched, the asterisk * allows that character to be matched any number of times and the question mark ? makes it ungreedy and tells it to stop matching when it hits the next part of the expression. The closing brackets.
  • \}\); - This final part is simply the closing tags. It's going to use a literal closing curly brace }, followed by a closing parenthesis ) and a semicolon ; to be the end of the string.

Of course, since you are matching so many REGEX reserved characters, we end up with five slashes.

Anyway, if you take that an put it into a preg_match_all context, you'd end up with something like this:

preg_match_all('~\$\((?!document\).ready).*?\}\);~sim', $string, $matches);
print "<pre>"; print_r($matches[0]); print "</pre>";

This outputs:

Array
(
    [0] => $('.x').click(function(){
        // some thing
    });
    [1] => $('.y').click(function(){
        // some thing
    });
)

Here is a working demo. http://ideone.com/R1t5P5

Upvotes: 1

Erutan409
Erutan409

Reputation: 752

See this regex:

<head>\s*<script> # Anchor your regex to these tags
  \s*\$\(\h*document\h*\)\.ready\( # Match the beginning statement
    ([\S\s]+) # Grab the content you want
  \);\s* # Match the ending statement
<\/script> # Anchor the last closing tag to prevent over-matching

So, everything you want is inside the first capture group. This is a dirty way of getting your content, but based on your aforementioned assurances of no varying content, this should work fine.

Upvotes: 0

Related Questions