在特定条件下获取After当前数组值

Question

我的学习案例有问题。在从table data获取数组值的同时，我尝试将数组值与string中的列号进行匹配。因此，如果找到的当前值在列号过程中一个匹配，则可能会完成对最后一个条件的当前数组的处理，如果找到的当前数组值与列号过程中的一个匹配，则将在当前数组值之后追加对所找到的当前值的处理。在列号中找不到的值将是它的数组值。有关更多详细信息，让我们看看

表格数据

  

否-数字-c_num

     

1-1-1A2B-XXXX

     

2-1-1A2B 3C4D-YYYY

     

3-1A2B 3C4D 5E6F-ZZZZ

我会尝试的

<?php
$result = "";
$string = "1A2B 1A2B 3C4D 1A2B 1A2B 3C4D 1A2B 3C4D 5E6F 7G8H";
$array = explode(" ", $string);
foreach($array as $key => $value){
  $query = "SELECT * FROM WHERE number LIKE '$value%'";
  $exe = $connect->query($query);
  if($exe->num_rows > 1){
    //
    //do something?
    //
  } else if(empty($exe->num_rows)) {
    $result .= $value." ";
  } else {
    $row = $exe->fetch_array();
    $result .= $row['c_num']." ";
  } 
}
?>

所需结果

XXXX YYYY XXXX YYYY ZZZZ 7G8H

上面的解释

array(
  [XXXX] => 1A2B
  [YYYY] => 1A2B 3C4D
  [XXXX] => 1A2B
  [YYYY] => 1A2B 3C4D
  [ZZZZ] => 1A2B 3C4D 5E6F
  [7G8H] => 7G8H
);  

请给我一个建议：）

Answer 1

您可能想先将所有数据库获取到一个数组中，并创建一个“映射”，然后遍历它。

/* Query */
$result = array(
    array('number' => '1A2B', 'c_num' => 'XXXX'),
    array('number' => '1A2B 3C4D', 'c_num' => 'YYYY'),
    array('number' => '1A2B 3C4D 5E6F', 'c_num' => 'ZZZZ'),
);
//$result = mysql_query("SELECT number, c_num FROM table");

/* Create Map */
$map = array();

//while ($row = mysql_fetch_array($result, MYSQL_ASSOC)) {
foreach($result as $row) {

    $numbers = explode(" ", $row['number']);
    $value = $row['c_num'];
    $count = count($numbers);

    $maps = array();
    create_map($maps, 0, $numbers, $count, $value);
    $map = array_merge_recursive($map, $maps);
}

function create_map(&$map, $i = 0, $numbers, $count, $value)
{
    $map = array($numbers[$i] => array());

    if ($i == $count-1)
        $map[$numbers[$i]]['value'] = $value;

    if ($i < $count-1) 
        create_map($map[$numbers[$i++]], $i, $numbers, $count, $value);
}

/* Search */
$string = "1A2B 1A2B 3C4D 1A2B 1A2B 3C4D 1A2B 3C4D 5E6F 7G8H";

$keys = explode(" ", $string);
$tmp_map = $map;

for ($i = 0; $i < count($keys); $i++) {

    $key = $keys[$i];
    $next_key = isset($keys[$i+1]) ? $keys[$i+1] : null;
    $tmp_map = &$tmp_map[$key];

    if (!isset($tmp_map[$next_key])) {
        //echo $key;
        echo isset($tmp_map['value']) ? $tmp_map['value'] : $key; echo " ";

        $tmp_map = $map;

    }
}

---

编辑：如果搜索字符串不是那么大，则可以通过选择包含搜索字符串中数字的记录来进行优化。

/* Query */

$search_string = "1A2B 1A2B 3C4D 1A2B 1A2B 3C4D 1A2B 3C4D 5E6F 7G8H";
$unique_ss = array_unique(explode(" ", $search_string));
$search_query = "number LIKE '". implode("*' OR number LIKE '", $unique_ss) . "*'";

$result = mysqli_query("SELECT number, c_num FROM table WHERE {$search_query}");

/* Create Map */
$map = array();

while ($row = mysqli_fetch_array($result, MYSQL_ASSOC)) {

    $numbers = explode(" ", $row['number']);
    $value = $row['c_num'];
    $count = count($numbers);

    $maps = array();
    create_map($maps, 0, $numbers, $count, $value);
    $map = array_merge_recursive($map, $maps);
}

function create_map(&$map, $i = 0, $numbers, $count, $value)
{
    $map = array($numbers[$i] => array());

    if ($i == $count-1)
        $map[$numbers[$i]]['value'] = $value;

    if ($i < $count-1) 
        create_map($map[$numbers[$i++]], $i, $numbers, $count, $value);
}

/* Search */

$keys = explode(" ", $search_string);
$tmp_map = $map;

for ($i = 0; $i < count($keys); $i++) {

    $key = $keys[$i];
    $next_key = isset($keys[$i+1]) ? $keys[$i+1] : null;
    $tmp_map = &$tmp_map[$key];

    if (!isset($tmp_map[$next_key])) {
        //echo $key;
        echo isset($tmp_map['value']) ? $tmp_map['value'] : $key; echo " ";

        $tmp_map = $map;

    }
}