如何检查另一个数组数组中是否存在类似的数组

时间:2017-01-08 05:00:25

标签: php arrays loops

我有一个带有时间和ID的数组,我正在使用不同的id添加新的时间,我需要先检查它是否存在。离。

第一个数组

$times = array(
    array('start'=>"1:00","end"=>"1:59","id"=>1),
    array('start'=>"2:00","end"=>"2:59","id"=>1),
    array('start'=>"3:00","end"=>"3:59","id"=>1),
    array('start'=>"4:00","end"=>"4:59","id"=>1),
    array('start'=>"5:00","end"=>"5:59","id"=>1),
    array('start'=>"6:00","end"=>"6:59","id"=>1)
);

需要做

$time = array('start'=>"2:00","end"=>"2:59","id"=>2);
if(!in_array($time,$times){ // here is the problem 
    array_push($times,$time);
}

这不是重复的,因为它不是关于对键/值,因为它总是相同的关于具有相同的键/值对但是检查一个新元素 - 不管它的id键值 - 是否已经存在于数组中

1 个答案:

答案 0 :(得分:4)

由于id键不同,因此不能直接使用数组比较函数和运算符。我建议简单地迭代数组并比较键:

$found = false;
foreach ($times as $key => $t) {
  if ($t['start'] == $x['start'] && $t['end'] == $x['end']) {
    $found = true;
    $times[$key] = $x;
    break;
  }
}

if (!$found) {
  $times[] = $x;
}

如果字段数很大,甚至未知,您可以创建id字段未设置的临时数组,并将它们与比较运算符进行比较:

$tmp_x = $x;
unset($tmp_x['id']);

$found = false;
foreach ($times as $key => $t) {
  $tmp_t = $t;
  unset($tmp_t['id']);

  if ($tmp_t == $tmp_x) {
    $found = true;
    $times[$key] = $x;
    break;
  }
}