Get content between shortcodes

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I need to get the content between a wordpress shortcode.

Like say [bla_blabla name="a"]Variation A[/bla_blabla]

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should return Variation A

I thought of using regex to get it, but there is a shortcodes.php file in wordpress which should already be capable of doing it? Could you guide me into the correct way of doing it?

I have currently used this code 

<?php
function abtest_runner($input) {
    //A bit confused if you wanted equal chances of selecting one or equal changes?
    //This is for equal chances.
    $size = count($input);
    $select = rand(0,$size-1);
    $temp=array();
    $selection = $input[$select];
    $temp = (explode("]",$selection));
    $temp = (explode("[",$temp[1]));
    echo $temp[0];

}

$input[0] = '[bla_blabla name="a"]Variation A[/bla_blabla]';
$input[1] = '[bla_blabla name="b"]Variation B [/bla_blabla]';

abtest_runner($input);
?>
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1 comment

  1. If you have registered you shortcode in WordPress using the [add_shortcode][1] function then, you can extract your shortcode content using the following method:

    $pattern = get_shortcode_regex();
$content  = '[bla_blabla name="a"]Variation A[/bla_blabla]';
$matches = array();
preg_match("/$pattern/s", $content, $matches); 
print_r($matches[5]);

    $matches[5] will contain your content.

    Hope this helps.