note 114357 added to function.array-map

I wanted a nice way to convert an array with x values as keys and y values as values e.g. array(x => y,...) into x,y co-ordinates e.g. array(array(x,y), ...). You can do: <?php foreach ($waveform as $key => $waveformPoint) { $coordinates[] = array($key, $waveformPoint); } ?> But array_map with a null callback gives you a nicer way: <?php $coordinates = array_map(null, array_keys($waveform), array_values($waveform)); ?> ---- Server IP: 72.52.91.14 Probable Submitter: 72.52.91.14 ---- Manual Page -- http://php.net/manual/en/function.array-map.php Edit -- https://master.php.net/note/edit/114357 Del: integrated -- https://master.php.net/note/delete/114357/integrated Del: useless -- https://master.php.net/note/delete/114357/useless Del: bad code -- https://master.php.net/note/delete/114357/bad+code Del: spam -- https://master.php.net/note/delete/114357/spam Del: non-english -- https://master.php.net/note/delete/114357/non-english Del: in docs -- https://master.php.net/note/delete/114357/in+docs Del: other reasons-- https://master.php.net/note/delete/114357 Reject -- https://master.php.net/note/reject/114357 Search -- https://master.php.net/manage/user-notes.php