Question

I have an large array like (simplified for convenience):

Array
(
    [last_name] => Ricardo 
    [first_name] => Montalban
    [sex] => Yes please
    [uploader_0_tmpname] => p171t8kao6qhj1132l14upe14rh1.jpg
    [uploader_0_name] => IMAG0114-1.jpg
    [uploader_0_status] => done
    [uploader_count] => 1
    [captcha_uid] => 155
)

And wish to remove all key value pairs where the key starts with uploader_ (this can be a series) and also every occurrence of captcha_uid.

I’ve seen a useful example here:
remove a key if value matches a pattern?
but I’m terrible at regular expressions. How to optimally do this? Your views are much appreciated.

Answer 1

You don’t need regular expressions in such a simple case. Applying the accepted answer in the other question:

foreach( $array as $key => $value ) {
    if( strpos( $key, 'uploader_' ) === 0 ) {
        unset( $array[ $key ] );
    }
}

unset( $array[ 'captcha_uid' ] );