Issue when trying to use IN() in wpdb

倾然丶 夕夏残阳落幕 提交于 2019-11-27 14:47:03

Try this code (FIXED):

// 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;

WordPress already has a function for this purpose, see esc_sql(). Here is the definition of this function:

Escapes data for use in a MySQL query. Usually you should prepare queries using wpdb::prepare(). Sometimes, spot-escaping is required or useful. One example is preparing an array for use in an IN clause.

You can use it like this:

$villes = ["paris", "fes", "rabat"];
$villes = array_map(function($v) {
    return "'" . esc_sql($v) . "'";
}, $villes);
$villes = implode(',', $villes);
$query = "SELECT distinct telecopie FROM `comptage_fax` WHERE `ville` IN (" . $villes . ")"

FUNCTION:

function escape_array($arr){
    global $wpdb;
    $escaped = array();
    foreach($arr as $k => $v){
        if(is_numeric($v))
            $escaped[] = $wpdb->prepare('%d', $v);
        else
            $escaped[] = $wpdb->prepare('%s', $v);
    }
    return implode(',', $escaped);
}

USAGE:

$arr = array('foo', 'bar', 1, 2, 'foo"bar', "bar'foo");

$query = "SELECT values
FROM table
WHERE column NOT IN (" . escape_array($arr) . ")";

echo $query;

RESULT:

SELECT values
FROM table
WHERE column NOT IN ('foo','bar',1,2,'foo\"bar','bar\'foo')

May or may not be more efficient, however it is reusable.

The prepare function also takes an array as the second parameter.

You can try converting $villes like this:

Current

<?php
$villes = '"paris","fes","rabat"';
?

Change it to

<?php
$villes = array("paris","fes","rabat");
?>

Now, try passing $villes to the prepare func and see if it works. Hope it helps.

易学教程内所有资源均来自网络或用户发布的内容,如有违反法律规定的内容欢迎反馈
该文章没有解决你所遇到的问题?点击提问,说说你的问题,让更多的人一起探讨吧!