regexp - removing php comments

jovanross

I'm trying to automagically use php to remove comments from my code. I'm one of those 'OOP'(s) guys. (OOPs, does those objects really take up that much memory??) So to relieve my stressed server, instead of including 8 different objects (objs and config files) on every request, I cache them all in a single file so that php need not venture deep into filesystem land. With that being finished, I'm getting greedy and wanting to trim my comments from the file and replace them with a single space. I must admit, even though I've been progamming for a few years I haven't quite mastered the fine art of regexps. Could someone give me a hand? Thanks.

$cache .= "blahblahblahblahblahblah;
//my comment
$cache .=$blah.$blah;
$cache .=$blah.$blah;
#another comment
$cache .= $blah;

Does not work:
$cache = eregi_replace("^{([\/\/]|[#])([a-zA-Z0-9].)*^{([\r\n])","\r\n",$cache);}}

-Slightly perplexed

poison

/^\s*?\#.*$/smi

(isn't perfect)

/\/\*.*?\*\//smi

/^\s*?\/\/.*$/smi

(isn't perfect)
and use preg_replace instead...
should probably work...
havent tested them
regards

sidney

 $txt='$cache .= "blahblahblahblahblahblah; 
//my comment 
$cache .=$blah.$blah; 
$cache .=$blah.$blah; 
#another comment 
$cache .= $blah;';
$txt=preg_replace("/\\/\\/.*\n|#.*\n/","",$txt);
echo "<pre>".$txt."</pre>";

poison

$txt=preg_replace("/\/\/.*\n|#.*\n/","",$txt);

bad idea

$url="http://somepage.net/";
😉
block comments won't be replaced either

$code=preg_replace('/^\s*?(\#|\/\/).*$/smi', '', $code);
$code=preg_replace('/\/\*.*?\*\//smi', '', $code);

regards

sidney

poison the request was asking for coments # and // not / /

fixed the bug you found in mine havent added / / comments but it would be quite simple to do so
this will not remove coments o first line of code tho

   <?php
$txt='$cache .= "blahblahblahblahblahblah; 
//my comment 
$cache .=$bl#ah.$blah;   //dhhdhh
$cache .=$bl//ah.$blah; 
#another comment 
$cache .= $blah;'; 
$txt1=preg_replace("/((;\).*|\n)(\\/\\/|#).*\n/","$2\n",$txt);
$code1=preg_replace('/^\\s*?(\\#|\\/\\/).*$/smi', '', $txt);
$code2=preg_replace('/\\/\\*.*?\\*\//smi', '', $txt);
echo "<pre>txt1
".$txt1."</pre>";
echo "<pre>code1
".$code1."</pre>";
echo "<pre>code2
".$code2."</pre>";
?>

output

txt1
$cache .= "blahblahblahblahblahblah;
$cache .=$bl#ah.$blah;
$cache .=$bl//ah.$blah;
$cache .= $blah;
code1
$cache .= "blahblahblahblahblahblah;

code2
$cache .= "blahblahblahblahblahblah;
//my comment
$cache .=$bl#ah.$blah; //dhhdhh
$cache .=$bl//ah.$blah;
#another comment
$cache .= $blah;

looks like yours need some more work good luck

jovanross

Thanks, I think I'm on the right path now. I had some time this weekend, so I took a crash course on regex as well. Pretty darn cool.