regular expression and forward slash

php regex preg-replace
pixeline picture pixeline · Jun 30, 2010 · Viewed 30k times · Source

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.

Answer

Kamil Szot picture Kamil Szot · Jun 30, 2010

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/

Related questions

Remove multiple whitespaces

I'm getting $row['message'] from a MySQL database and I need to remove all whitespace like \n \t and so on. $row['message'] = "This is a Text \n and so on \t Text text."; should be formatted to: $row['message'] = …

Read More
PHP remove special character from string

I have problems with removing special characters. I want to remove all special characters except "( ) / . % - &", because I'm setting that string as a title. I edited code from the original (look below): preg_replace('/[^a-zA-Z0-9_ -%][().][\/]/s', …

Read More
Replace preg_replace() e modifier with preg_replace_callback

I'm terrible with regular expressions. I'm trying to replace this: public static function camelize($word) { return preg_replace('/(^|_)([a-z])/e', 'strtoupper("\\2")', $word); } with preg_replace_callback with an anonymous function. I don't understand what the \\2 is doing. Or …

Read More