如何在php中使用不等于数组？

Question

我正在使用mysqli包装类。

更新mysql数据库的示例代码如下：

<?php
include('db.php');

    $updatedata = array(
                'user_type' => '15'
            );

    $where = array(
            'member_id' => '5'
            );

    $update = $database->update('mysql_table_name', $updatedata, $where );

?>

现在上面的代码非常适合 member_id = 5 。

但是如何使用相同的上述功能更新**member_id != 5**（不等于5 ）的所有其他成员ID？

E.G。代码预期如下：

 <?php
 include('db.php');

    $updatedata = array(
                'user_type' => '15'
            );

    $where = array(
            'member_id' ***is_not_equal_to*** '5'
            );

    $update = $database->update('mysql_table_name', $updatedata, $where );

?>

Mysqli包装类 - 更新功能代码如下：

 public function update( $table, $variables = array(), $where = array(), $limit = '' )
    {
    self::$counter++;
    //Make sure first that update data values are sanitized with above filter function
    //Make sure the required data is passed before continuing
    //This does not include the $where variable as (though infrequently)
    //queries are designated to update entire tables
    if( empty( $variables ) )
    {
        return false;
    }
    $sql = "UPDATE ". $table ." SET ";
    foreach( $variables as $field => $value )
    {

        $updates[] = "`$field` = '$value'";
    }
    $sql .= implode(', ', $updates);

    //Add the $where clauses as needed
    if( !empty( $where ) )
    {
        foreach( $where as $field => $value )
        {
            $value = $value;

            $clause[] = "$field = '$value'";
        }
        $sql .= ' WHERE '. implode(' AND ', $clause);   
    }

    if( !empty( $limit ) )
    {
        $sql .= ' LIMIT '. $limit;
    }

    $query = $this->link->query( $sql );

    if( $this->link->error )
    {
        $this->log_db_errors( $this->link->error, $sql );
        return false;
    }
    else
    {
        return true;
    }
}