[Resolved] Functions in preg_replace

foxroberts

Hi.

I replace email addresses by an email link:
$text = preg_replace($search, '<a href="mailto:$0">$0</a>', $text);

I want to add an "antispam feature", which would be a function.
But this doesn't work:

$text = preg_replace($search, '<a href="'.antiSpam('mailto:'.$0).'">'.antiSpam($0).'</a>', $text);

PHP doesn't want me to play around with those internal vars:
parse error, unexpected T_LNUMBER, expecting T_VARIABLE or '$'

Do you have an idea how to solve this?
Thank you for any hint.

Fox

edcellgavin

is $0 a variable? if so, try changing it to a valid one, since a valid variable name starts with a letter or underscore, followed by any number of letters, numbers, or underscores.

foxroberts

$0 is the variable preg_replace() generates.
I don't think that it can be changed.

edcellgavin

$0 is the variable preg_replace() generates.I don't think that it can be changed.

can u post the code where you 'generate' the variable?

foxroberts

Of course:

$text = 'me@mydomain.com';
echo preg_replace('/([\w.]+)(@)([-\w.]+)/i', '<a href="mailto:$0">$0</a>', $text);

Try it out. 🙂

Weedpacket

Have a look at [man]preg_replace_callback[/man]; that will let you break all that replacement stuff out into a separate function.

foxroberts

Perfect! Thank you!

phpbuildergas

Good,:p Test it