php - 带有 IN() 条件的 WordPress 准备好的语句

Question

我在一个字符串中有三个值，如下所示:

$villes = '"paris","fes","rabat"';

当我将它输入到这样的准备好的语句中时:

$sql    = 'SELECT distinct telecopie FROM `comptage_fax` WHERE `ville` IN(%s)';
$query  = $wpdb->prepare($sql, $villes);

echo $query; 显示:

SELECT distinct telecopie FROM `comptage_fax` WHERE `ville` IN('\"CHAPELLE VIVIERS \",\"LE MANS \",\"QUEND\"')

它没有将字符串写成三个独立的值——它只是一个双引号被转义的字符串。

如何在 WordPress 中正确实现具有多个值的准备语句？

Answer 1

试试这个代码:

// Create an array of the values to use in the list
$villes = array("paris", "fes", "rabat");    

// Generate the SQL statement.
// The number of %s items is based on the length of the $villes array
$sql = "
  SELECT DISTINCT telecopie
  FROM `comptage_fax`
  WHERE `ville` IN(".implode(', ', array_fill(0, count($villes), '%s')).")
";

// Call $wpdb->prepare passing the values of the array as separate arguments
$query = call_user_func_array(array($wpdb, 'prepare'), array_merge(array($sql), $villes));

echo $query;

• implode()
• array_fill()
• call_user_func_array()
• array_merge()