preg replace problem

[compose]

Hello,

I want to replace all character other then alphanumeric to "-", to get this output i wrote this expression but it not works, please check it.

preg_replace([^a-zA-Z0-9],"-",$string);

Please help.

Vineet

[barns101]

You may need to add a $ to the pattern, so that it knows to stop:

preg_replace([^a-zA-Z0-9$],"-",$string);

[compose]

Hello,

Thanks for reply. But it not works :(.

Vineet

[barns101]

Try this (not tested, but similar to something I use):

preg_replace("^([a-zA-Z0-9])$","-",$string);

[coopster]

compose, your original pattern would have worked but you need to supply delimiters [php.net]. Also remember that the original string remains the same, you need to assign the replaced value to either the original variable or a new variable:

<pre> 
<?php 
$string = 'abcABC123-@#4abcABC123'; 
print "$string\n"; 
$updatedString = preg_replace("/[^a-zA-Z0-9]/","-",$string); 
print "$string\n"; 
print "$updatedString\n"; 
?> 
</pre>