php怎么把二维数组转成字符串

$array = array( array('id' => 1, 'name' => 'John'), array('id' => 2, 'name' => 'Jane') ); $json = json_encode($array); echo $json; // 输出 [{"id":1,"name":"John"},{"id":2,"name":"Jane"}]

$array = array( array('id' => 1, 'name' => 'John'), array('id' => 2, 'name' => 'Jane') ); $str = ''; foreach ($array as $key => $value) { $str .= "id: " . $value['id'] . ", name: " . $value['name'] . "\n"; } echo $str; // 输出 id: 1, name: John\nid: 2, name: Jane\n

$array = array( array('id' => 1, 'name' => 'John'), array('id' => 2, 'name' => 'Jane') ); $str = serialize($array); echo $str; // 输出 a:2:{i:0;a:2:{s:2:"id";i:1;s:4:"name";s:4:"John";}i:1;a:2:{s:2:"id";i:2;s:4:"name";s:4:"Jane";}} $new_array = unserialize($str); var_dump($new_array); // 输出 array(2) { [0]=> array(2) { ["id"]=> int(1) ["name"]=> string(4) "John" } [1]=> array(2) { ["id"]=> int(2) ["name"]=> string(4) "Jane" } }