php - php内爆数组元素

Question

如何打开以下数组

$p = array('1' => 'a', '2' => 'b', '3' => 'c');

进入以下输出？请注意，每个数组元素都在单独的行上：

1:a 
2:b
3:c

Answer 1

您正在寻找基本的 for-each 构造：

$p = array('1' => 'a', '2' => 'b', '3' => 'c');
foreach($p as $key => $value) {
  echo $key.":".$value."\n";
}

Answer 2

var $colon_separated = array();
foreach ($a as $key => $value) {
    $colon_separated[] = "$key:$value";
}
$result = implode("\n", $colon_separated);