Online PHP editor | output for 1c5h7

@ 2014-05-21T20:15:37Z

<?php
// 元データを用意する
$a = array();
$a[2]=10;
$a[10]=2;
$a[3]=30;
$a[22]=20;
$a[9]=4;
$a[53]=29;
//確認
echo $a[2];
//キーを保持してソート
asort($a);
//確認
echo $a[2];
//最初から 3 個を $b[] に代入
$i = 0;
$b = array();
foreach ($a as $k=>$d){
$b[] = $k;
if (3 <= ++$i){ break;}
}
//確認
echo $b;
?>

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: 1010 Warning: Array to string conversion in /in/1c5h7 on line 24 Array
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33: 1010 Notice: Array to string conversion in /in/1c5h7 on line 24 Array
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 7.3.32 - 7.3.33, 7.4.26: 1010Array

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