正则表达式，用于查找值并在PHP中返回

Question

I've been trying to figure this out for 2 hours now with no success. Its a bit complicated for me i guess. I am trying to parse a script file in PHP and return some values to the user. The ones i want are like this:

_value = object runFunction blah blah blah

Basically what i want is (in an algorithm):

• IF case-insensitive runFunction is found in the line (because it might be runfunction)
• AND the line starts with _ (underscore) (or if possible before the = there is a value that starts with _ to be sure of the result)
• THEN return that underscore value before the = to me.

Usually 99.9% the format is like this...But there are small cases it can be like this:

_value = _object runFunction blah blah blah (in case the _ after the = messes things up).

Any help here :) ? Thanks

Answer 1

try something like:

$str = 'YOUR FILE CONTENTS HERE';
$match = preg_match_all('/(_[a-zA-Z0-9_]+) ?= ?[a-zA-Z0-9_]+ runFunction/s',$str,$matches);

var_dump($matches);

you'll probably need to add the multiline flag.