给定一数组 $galleries = array(1,2,5),我想要一个SQL查询,它在WHERE子句中使用数组的值,如:

SELECT *
FROM galleries
WHERE id = /* values of array $galleries... eg. (1 || 2 || 5) */

如何生成此查询字符串以用于MySQL?

 

最简单的方法:implode

数组元素的值是整型:

$query = \"SELECT * FROM `$table` WHERE `$column` IN(\".implode(\',\',$array).\")\";

数组元素的值是字符串:

$query = \"SELECT * FROM `$table` WHERE `$column` IN(\'\".implode(\"\',\'\",$array).\"\')\";

 

对于具有转义功能的MySQLi:

$ids = array_map(function($a) use($mysqli) { 
    return is_string($a) ? \"\'\".$mysqli->real_escape_string($a).\"\'\" : $a;
  }, $ids);
$ids = join(\',\', $ids);  
$result = $mysqli->query(\"SELECT * FROM galleries WHERE id IN ($ids)\");

对于准备好声明的PDO:

$qmarks = implode(\',\', array_fill(0, count($ids), \'?\'));
$sth = $dbh->prepare(\"SELECT * FROM galleries WHERE id IN ($qmarks)\");
$sth->execute($ids);
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