Re: [PHP] Help with preg_replace

[John Clegg]

Hi Joel,

Thanks for the reply.

I have tried using  "/" to delimit the string  and I get the following error

String

$url = "/http://www.foo.com/maxbid/Unsubscribe.php?EmailAddress=[MAIL]/";;

Gives the error:
*Warning*: Unknown modifier '/' in* /test.php* on line *8*
I found out that I could use  ' to delimit from Example 5 in the php 
manual page for preg_replace.

Also I need to  replace only one occurance of the string at a time, so I 
can't use str_replace :-( .

Any other suggestions??

Cheers

John



joel boonstra wrote:

On Mon, Jan 19, 2004 at 06:50:37PM +0200, John Clegg wrote:
 

Hi

I am having some problems with preg_replace and I wondering if someone 
could suggest a fix or explain why it is not working.



Here is the Code:
*********************
<?php
$code = "blah http://www.foo.com/Unsubscribe.php?EmailAddress=[MAIL] blah";
$url = "'http://www.foo.com/maxbid/Unsubscribe.php?EmailAddress=[MAIL]'";
echo "BEFORE : $code<br><br>";
$replace  = "Foo";
$code = preg_replace($url,$replace,$code,1);
echo "AFTER: $code<br>";
?>
**********************
Here is the results of the script:

**********************
BEFORE : blah 
http://www.qxlmaxbid.com/maxbid/Unsubscribe.php?EmailAddress=[MAIL] blah

AFTER: blah 
http://www.qxlmaxbid.com/maxbid/Unsubscribe.php?EmailAddress=[MAIL] blah

**********************

It should give the following result:

**********************

AFTER: blah Foo blah

**********************
   

preg_replace expects the first argument to be a pattern, which should be
enclosed in forward slashes ("//").  So your $url variable should be
surrounded with slashes.  You have single quotes in your $url variable,
but I don't think that PHP behaves like perl in letting you use
whichever delimiter you choose.  Try replacing the single quotes with
forward slashes.
Additionally, if you're only doing a simple string substitution, you
should use str_replace instead:
 http://php.net/str_replace

You won't need the "/" delimiters, and it will be faster than using
preg_replace.
joel

 

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