note 77423 added to function.array-shift

My friend is very embarrassed. <?php echo "<pre><code>"; $a = array( "a" => 1, "5" => 3 , "b" => 2, "3" => 9); echo "\n---- before \$a ----\n"; var_dump($a); echo "\n---- after \$a ----\n"; $b = array_shift($a); var_dump($a); echo "\n---- after\$b ----\n"; var_dump($b); echo "</code></pre>"; ?> ---- before $a ---- array(4) { ["a"]=> int(1) [5]=> int(3) ["b"]=> int(2) [3]=> int(9) } ---- after $a ---- array(3) { [0]=> int(3) ["b"]=> int(2) [1]=> int(9) } ---- after $b ---- int(1) How can I solve this? ---- Server IP: 61.195.146.164 Probable Submitter: 210.142.245.37 ---- Manual Page -- http://www.php.net/manual/en/function.array-shift.php Edit -- https://master.php.net/note/edit/77423 Del: integrated -- https://master.php.net/note/delete/77423/integrated Del: useless -- https://master.php.net/note/delete/77423/useless Del: bad code -- https://master.php.net/note/delete/77423/bad+code Del: spam -- https://master.php.net/note/delete/77423/spam Del: non-english -- https://master.php.net/note/delete/77423/non-english Del: in docs -- https://master.php.net/note/delete/77423/in+docs Del: other reasons-- https://master.php.net/note/delete/77423 Reject -- https://master.php.net/note/reject/77423 Search -- https://master.php.net/manage/user-notes.php