$str =~ s/(?:.+?\n){3}//m;

[Anon]

$str =~ s/(?:.+?\n){5}//m;

this works wery well in perl, when i need to rmove couple of lines from file (or anything else separated with newlines ... or /^{(?:.+?)$/m...} doesn't matter).

But why this doesn't work in php:

$str = preg_replace("/(?:.+?\n){5}/m", '', $str);

More prciesly it works, bu very greedy🙁

[cordex]

A couple of days ago I checked the speed difference between ereg_replace and preg_replace and preg_replace was definitely slower. It may be more familier, but it takes ~75% longer then ereg_replace.

[Anon]

zzzzzzzz....... Ok, i agree to do it slowly. But she doesn't wan't to move at all 🙁

[Anon]

Every benchmark I've ever run myself or seen in other posts showed the preg functions are faster than the ereg functions. I think the test you ran was a rare exception.

[Anon]

Try the ungreedy modifier.

$str = preg_replace("/(?:.+?\n){5}/mU", '', $str);

[ebuuu]

I tied for shure!
And, btw, using U makes ?: greedy!