PHP preg replace help

HI, I have t开发者_如何学编程hese strings:

#05#, #45#, #785# ...etc

I need to get the id so #01544# become 01544. How can I do?

Thanks!

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echo str_replace("#", "", "#05#, #45#, #785#");

more info at:

http://php.net/manual/en/function.str-replace.php

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Use this:

preg_replace('(#([0-9]+)#)', '\1', '#05#, #45#, #785#');

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Try

$str = trim('#01544#', '#');

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Why not just use str_replace? E.g.

$string = str_replace('#', '', $string);

For simple patterns like this, regex is never necessary.

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You can just use str_replace:

$id = str_replace("#", "", $your_variable);