如何用PHP过滤字符串？ [重复]

I have a plugin exporting a bunch of strings from a database for me. The data returned is in a format like this

a:3:{i:0;s:8:"Skeletal";i:1;s:6:"Cardio";i:2;s:8:"Muscular";}

a:3:{i:0;s:14:"Access to care";i:1;s:15:"Confidentiality";i:2;s:20:"Consent to treatment";}

I can apply a php function to filter the data, how would I get it to return like this, using a function.

Skeletal, Cardio, Muscular

Access to care, Confidentiality, Consent to treatment

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Those strings are serialized variables. Arrays specifically. use unserialize() to get the array and then join() to comma separate it the way you want.

$unserialized_array = unserialize($string);
$comma_separated = join(', ', $unserialized_array);

echo $comma_separated;

edit: I think this is the simplest solution, but Obsidian Age's answer below provides a regex that will also do what you want (and you did ask for a regex);

Those are serialized arrays, you need to unserialize them

You can do this with a really simple preg_match_all() of /".*?"/:

<?php
$string = 'a:3:{i:0;s:8:"Skeletal";i:1;s:6:"Cardio";i:2;s:8:"Muscular";}';
preg_match_all('/".*?"/', $string, $matches);
print_r($matches);

Now $matches contains an array that you can simply access the indexes of:

Array
    (
        [0] => "Skeletal"
        [1] => "Cardio"
        [2] => "Muscular"
    )

I've created a working sample of this here.

Hope this helps! :)