如何使用PHP从多个值等于x的数组中选择数据？

Question

我如何使用PHP来选择 'type_id' = x and level_id = x or term_id = x? 所有会员计划 'type_id' = x and level_id = x or term_id = x? 例如，我想返回所有Single (type_id = 1)和Basic (level_id = 1)成员资格计划。 我试图避免额外的SQL查询，因为数据已经存储在一个数组中，我查找我想要的数据并不容易。

我也试图避免大量的foreach循环。 例如，我最近尝试了以下哪种工作...但是如果我有更多类型而不是我的水平怎么办？ 必须有更好的方法，对吗？

<?php
$available_types = array();
$available_levels = array();
foreach ($membership_plans as $plan) {
    $available_levels[$plan->level_id] = $plan->level_name;
    $available_types[$plan->type_id] = $plan->type_name;
}
$available_types = array_unique($available_types);// Unique Types
$available_levels = array_unique($available_levels);// Unique Levels
foreach ($available_levels as $level_id => $level_name) {// foreach level
    foreach ($available_types as $type_id => $type_name) {// list each type with level
        echo $level_name.' - '.$type_name;
        // find plans tht match type and level
        foreach ($plans as $plan) {
            // More code goes here, but it didn't work out
        }
    }
}
?>

我有一个会员计划数组，如下所示：

Array
(
    [0] => stdClass Object
        (
            [id] => 1
            [type_id] => 1
            [type_name] => Single
            [level_id] => 1
            [level_name] => Basic
            [term_id] => 1
            [term_name] => MTM
            [name] => SB_1
            [description] =>  
            [rate] => 58
            [hidden] => 1
            [sort] => 1000
            [active] => 1
        )

    [1] => stdClass Object
        (
            [id] => 2
            [type_id]`enter code here` => 1
            [type_name] => Single
            [level_id] => 1
            [level_name] => Basic
            [term_id] => 2
            [term_name] => 12 Months
            [name] => SB_12
            [description] =>  
            [rate] => 56
            [hidden] => 0
            [sort] => 1110
            [active] => 1
        )

    [2] => stdClass Object
        (
            [id] => 14
            [type_id] => 1
            [type_name] => Single
            [level_id] => 3
            [level_name] => Premier
            [term_id] => 2
            [term_name] => 12 Months
            [name] => SP_12
            [description] =>  
            [rate] => 76
            [hidden] => 0
            [sort] => 1310
            [active] => 1
        )
    [3] => stdClass Object
        (
            [id] => 16
            [type_id] => 1
            [type_name] => Single
            [level_id] => 3
            [level_name] => Premier
            [term_id] => 4
            [term_name] => 28 Months
            [name] => SP_28
            [description] =>  
            [rate] => 65.43
            [hidden] => 1
            [sort] => 1330
            [active] => 1
        )
    [4] => stdClass Object
        (
            [id] => 19
            [type_id] => 2
            [type_name] => Dual
            [level_id] => 1
            [level_name] => Basic
            [term_id] => 1
            [term_name] => MTM
            [name] => DB_1
            [description] =>  
            [rate] => 81
            [hidden] => 1
            [sort] => 2100
            [active] => 1
        )

)

Answer 1

您可能想要使用array_filter

array_filter(
  $arr, 
  function($v) {
    return (
      $v->type_id == 'x' 
      && ($v->level_id == 'x' || $v->term_id == 'x')
    )
  }
 )

如果x需要变量你有使用函数（$ v）使用（$ var）{并且可能更好地检查type_id是否存在。