PHP Snippets

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Remove key prefix from associative array

<?php

function remove_key_prefix( $prefix, $array ) {
    return array_combine(
        // remove key prefix
        array_map(function($v) use ($prefix) {
            return str_replace( $prefix, '', $v );
        }, array_keys( $array ) ),
        // ...and merge with values
        array_values( $array )
    );
}

/**
* EXAMPLE USAGE BELOW
*/

$in = array(
    'item_title'    => 'I like trains',
    'item_content   => 'I'm really big train enthusiast.'
);

$out = remove_key_prefix('item_', $in);

/**
* Returns:
*   array(
*      'title'     => 'I like trains',
*      'content'   => 'I'm really big train enthusiast.'
*  )
*/