C# regex to parse PHP function call list file

Question

I have a simple problem. I have a PHP file which contains a lot of function-calls like this one:

return self::_Call('client_changePassword',Array(
    $token,
    $password,
    $user_token
));

The name and the number of parameters can vary but the call itself always have this structure, including spaces and linebreaks.

What I need is a regular expression that will grab all these calls from the PHP file and split them into the function name (client_changePassword) and a group of parameters. Since the file has several hundreds of different calls, it needs to be reasonably fast, too.

The regular expression would be used within C# as part of a console application that will generate a simple code analysis. Basically, I need a list of methods plus parameters that PHP calls in the source and compare it with a list of definitions that is stored in a different project. This would help our code reviews a lot.

No, this is not PHP-related even though I'm trying to parse PHP code. My system can't run any PHP code and I don't even want to run PHP code.

WTH? you marked the accepted answer that contains a PHP solution and you still insist on C#? — leppie
– leppie, Commented Jul 8, 2015 at 10:37

Wiktor Stribiżew · Accepted Answer · 2015-07-08 10:30:07Z

1

You can use the following regex:

return\s+self::_Call\('(?<name>[^']+)'\s*,\s*[Aa]rray\((?:\s+\$(?<param>[^,)\n]+),?\r?\n)+

See demo

enter image description here

edited Jul 8, 2015 at 10:30

answered Jul 8, 2015 at 10:08

Wiktor Stribiżew

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5 Comments

Wim ten Brink Over a year ago

Thanks! Added a few modifications to create this one, which is slightly better: return\s+self::_Call\('(?<name>[^']+)'\s*,\s*[Aa]rray\((?:\s+\$(?<param>[^,^)^\r^\n]+),?\r?\n)+

Wiktor Stribiżew Over a year ago

Yes, named captures are way better and more readable. However, [^,^)^\‌r^\n] is a bit clumsy, I'd use [^,)\‌r\n] (or [^,)\n] since regexstorm complains of \r\n inside the character class).

Wim ten Brink Over a year ago

[^,)\‌r\n] works fine for me, so I've changed it into that. I still need to check for both \r and \n since there's no guarantee in which order they will appear in the PHP file.

Wiktor Stribiżew Over a year ago

It might be even unnecessary if the file was created in Linux/Unix since linebreaks are just \n there.

Wim ten Brink Over a year ago

The PHP file is either generated on a Mac or Windows, depending on the developer...

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