Convert wpdb sql array into php array

问题

With an sql query I'm grabbing the meta_value of a specific row from my wpdb. In sql it's an array, but it outputs in php as a string, like this:

a:1:{i:0;a:2:{i:0;s:10:”02/17/2014″;i:1;s:10:”Thom Stark”;}}

How can I convert this into a php array, so I can access the values from array 2's indices? My query looks like this:

$tabledata = $wpdb->get_row("SELECT meta_value FROM ".$prefix."frm_item_metas WHERE field_id='$fid' AND item_id='$eid'");
$data = $tabledata->meta_value;
echo $data;

outputs:  a:1:{i:0;a:2:{i:0;s:10:”02/17/2014″;i:1;s:10:”Thom Stark”;}}

回答1:

You can use unserialize

$string = 'a:1:{i:0;a:2:{i:0;s:10:”02/17/2014″;i:1;s:10:”Thom Stark”;}}';
$array = unserialize($string);

回答2:

Its a serialized array so u need to use unserialize to convert it back to array as

$string = 'a:1:{i:0;a:2:{i:0;s:10:"02/17/2014";i:1;s:10:"Thom Stark";}}';
$array = unserialize(trim($string));

print_r($array);

NOTE : you have ” it should be "

来源：https://stackoverflow.com/questions/22682602/convert-wpdb-sql-array-into-php-array