ansaurus

Question

Answer 1

+5 A:

$str = preg_replace('/-+/', '-', $str);

Tatu Ulmanen 2010-02-05 13:09:10

or better `$str = preg_replace('/-{2,}/', '-', $str);`

Raveren 2010-02-05 13:10:36

@Reveren Wouldn't that miss the --- in the middle of the string?

Neil Aitken 2010-02-05 13:13:02

Well, technically that would recude the number of replacements but IMHO the difference is negligible and `/-+/` is a lot cleaner :)

Tatu Ulmanen 2010-02-05 13:13:35

@Neil Aitken, no, `{2,}` means 'at least two characters'.

Tatu Ulmanen 2010-02-05 13:14:12

@Tatu: it really isn't

SilentGhost 2010-02-05 13:14:20

@Tatu ah, I didn't see the ,

Neil Aitken 2010-02-05 13:33:10

Answer 2

A:

No need regex

$text="1-2---3--4";
$s = implode("-",array_filter ( explode("-",$text) )) ;
print_r($s);

ghostdog74 2010-02-05 14:02:17

Exploding to array then joining back to string is neither more clear nor effective than the RegEx version.

KennyTM 2010-02-05 14:13:46

if that's what you think. But not me.

ghostdog74 2010-02-05 15:01:15

Replace Multiple "-" PHP