PHP将唯一项数组转换为复杂的查询字符串

Question

我有一个 php 数组，其中包含以下格式的数据。可能永远只有唯一的值和一个 NULL 值，这需要与其他值进行负匹配。

$colors = array_unique([
    NULL,
    "red",
    "black"
]);

我想把它转换成以下：

$converted = [
    "NOT LIKE '%red%' AND NOT LIKE '%black%'",
    "LIKE '%red%' AND NOT LIKE '%black%'",
    "LIKE '%black%' AND NOT LIKE '%red%'"
];

我怎样才能做到这一点？

我无法理解如何在 php 中完成此操作，我尝试了不同的 foreach 循环与数组的组合，但我无法动态执行此操作，因此第一个 $colour 数组可以扩展值但它保持不变原理（见同结构扩展数据示例2）。

示例 2

$colors = array_unique([
    NULL,
    "red",
    "black",
    "purple",
    "orange"
]);

$converted = [
    "NOT LIKE '%red%' AND NOT LIKE '%black%' AND NOT LIKE '%purple%' AND NOT LIKE '%orange%'",
    "LIKE '%red%' AND NOT LIKE '%black%' AND NOT LIKE '%purple%' AND NOT LIKE '%orange%'",
    "LIKE '%black%' AND NOT LIKE '%purple%' AND NOT LIKE '%orange%' AND NOT LIKE '%red%'",
    "LIKE '%purple%' AND NOT LIKE '%orange%' AND NOT LIKE '%red%' AND NOT LIKE '%black%'",
    "LIKE '%orange%' AND NOT LIKE '%red%' AND NOT LIKE '%black%' AND NOT LIKE '%purple%'",
];

Answer 1

来了

    <?php

function my_array_unique_query($values){
   $copy = $values;
    $query = array();

  foreach($values as $a){
      $copy = remove_null_and_like($values, $a);
      $q = "";
      if(!empty($a) && !is_null($a)){
          $q .= "LIKE %".$a."%'";
      }else{
          $q .= "NOT LIKE ".array_pop($copy);
      }
      if(count($copy) > 0){
          $q .= "AND NOT LIKE '".implode(' AND NOT LIKE ', $copy);
      }

      $query[] = $q;
  }
  return $query;
}

function remove_null_and_like($values, $like){
    $return = array();
    foreach($values as $a){
        if(!empty($a) && !is_null($a) && $a != $like){
            $return[] = "%".$a."%";
        }
    }
    return $return;
}

print_r(my_array_unique_query([
    NULL,
    "red",
    "black"
]));

print_r(my_array_unique_query([
    NULL,
    "red",
    "black",
    "purple",
    "orange"
]));

print_r(my_array_unique_query([
    NULL,
    "red"
]));