- array_keys: documentation ( source)
<?php
$arrayAD = array( '730400' => 29910, '730230' => 29910 ,'730205' => 1000 ,'730404' => 29910, '730202' => 1000, '730601' => 21840 );
$idPartidas=array_keys($arrayAD);
//$keys = array_keys($array, '730205');
foreach ($idPartidas as $key=>$valor){
echo $valor;
}
?>