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WordPress snippet: get single post custom value

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/**
* Get a single text value for a post custom field in WordPress, bypassing the normal array return.
*
* From a discussion on Twitter, which prompted me to post this. Many people seem to be
* unaware of PHP's `list()` operator (it's not, technically, a function).
*
* If you are not in the loop, you can pass a post ID as a second parameter.
*/
list( $val ) = get_post_custom_values( 'key' );
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