php character replace 2

[jim1202]

I need a little help. I need to substitute a ^ for a - but only in certain instances. This is an example I need a fix for - for the string 'abcd-efgh_zzzz_xxxx-1-99' I only need to replace the - if the hyphen is located next to a number. So in the example the correct result should be 'abcd-efgh_zzzz_xxxx^1^99'

Anyone?

 

[5474N]

Sounds to me like you need to use some regular expressions.

http://www.regular-expressions.info/

hope it helps.

 

[sleipnir214]

jim1202:

547n is right. You'll need a regular expression. Or perhaps more than one.

I can do it with two regular expressions. This script

<?php
$a = 'abcd-efgh_zzzz_xxxx-1-99';

$a = preg_replace ('/(\d)-/', '$1^', $a);
$a = preg_replace ('/-(\d)/', '^$1', $a);

print $a;
?>

outputs

abcd-efgh_zzzz_xxxx^1^99


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[Lrnmore]

How about this:

<?php
$str =<<<END
This is a line of text with abcd-efgh_zzzz_xxxx-1234-956569 in it.
This is a line without the prefix xxxx-1234-956569
This is a line of text with 1234-956569 in it.
This is a line of text with abcd-efgh_zzzz_xxxx-1-99 in it.
END;

echo "<pre>";
echo preg_replace("/(-)([\d]+)(-)([\d]+)/", "^\\2^\\4", $str);
echo "</pre>";

?>

One question, do you need to test for the prefix(abcd-efgh_zzzz_xxxx)
or is this the only occurence of the -1-99?

Thanks,

 

[jim1202]

thanks very much. I was having a lot of trouble with the preg_replace.. not sure I understand the statements now.. but they work great. Thanks very much.

 

[jim1202]

Lrnmore - I don't have to test for the prefix it could be any prefix but the ending number combo AA_BB-CC_DD-xx-xx (could be any number of digits really) needs to be have the - replaced with ^.. The ending number combo will always be preceded with an alpha character.. your script seems to do the job in one step.

 

[Lrnmore]

Glad it was helpful.
Thanks for the

.

You may know about php.net but in case you don't here's a link:

http://us3.php.net/preg_replace

Thanks,