regex: converting php code from eregi to preg_match

Question

Hi. I'm trying to find the proper regular expression to convert eregi($1,$2) to preg_match("/$1/i",$2)

i need to consider if there will be functions with () in it, and they may appear more then once. can anyone please provide the proper regular expression to do so ?

thanks

Answer 1

You don't want to use a regular expression to parse code.

You want to use a parser.

Answer 2

Are you trying to modify your source code, since eregi is deprecated? This regex will do the trick:

$source= <<<STR
eregi(\$1, \$2);
eregi('hello', 'world');
STR;

$source2= preg_replace("/eregi\(['\"]*([^\'\"),]+)['\"]*,\s*['\"]*([^'\"),]+)['\"]*\)/", 'preg_match("/$1/i", "$2")', $source);

var_dump($source2);