CODEWITHSUNDEEP
phpregexpreg-replace
pixeline
pixeline

Reputation: 17974

regular expression and forward slash

i'm searching for keywords in a string via a regular expression. It works fine for all keywords, exept one which contains a forward slash in it: "time/emit" .

Even using preg_quote($find,'/'), which escapes it, i still get the message:

Unknown modifier 't' in /frontend.functions.php  on line 71

If i print the find pattern, it shows /time\\/emit/ . Without preg_quote, it shows /time/emit/ and both return the same error message.

Any bit of knowledge would be useful.

Upvotes: 21

Views: 37862

Answers (4)

John Ostrowick
John Ostrowick

Reputation: 59

this should work:

$a="Hello////////"; 
$b=str_replace($a,"//","/");
echo $b;

Upvotes: 0

Kamil Szot
Kamil Szot

Reputation: 17817

Try to begin and end your regular expression with different sign than /

I personally use `

I've seen people using #

I think most chars are good. You can read more about it here: http://pl.php.net/manual/en/regexp.reference.delimiters.php

Like this:

 preg_match('#time/emit#', $subject);  // instead of /time/emit/

To put it another way: Your $find variable should contain rather #time/emit# than /time/emit/

Upvotes: 44

nathan
nathan

Reputation: 5452

looks like you have something already escaping it..

preg_quote('time/emit') // returns time\/emit
preg_quote('time\/emit') // returns time\\/emit

as a hack you could simply do:

preg_quote(stripslashes($find)) // will return time\/emit

Upvotes: 4

Ian Wood
Ian Wood

Reputation: 6573

bit of code?

the the 'regex' for that particular term should look something like '/time/emit/'. With a set of keywords there may be a more efficient method so seeing what you are doing would be good.

Upvotes: 0

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