php – MySQL bind_param将NULL写入表

2023年7月11日 221次阅读

问题：尽管我的$settings数组中包含值(int),但当值为0和2时,
MySQL会将NULL写入表中.

作为参考,$settings数组中的每个索引都是[0] = max和[1] = min的数组.

public function updateAdaptiveArmour($gameid, $shipid, $settings){

    foreach ($settings as $key => $value){
        debug::log($key." ".$value[0]." ".$value[1]);

       //just to show the contents
       //   [561103190304f][2015-10-04 12:44:41] particle 4 2 
       //   [56110319035b3][2015-10-04 12:44:41] laser 0 0 
       //   [56110319035b3][2015-10-04 12:44:41] molecular 0 0 
    }   


    try {
        if ($stmt = $this->connection->prepare(
                "UPDATE 
                    tac_adaptivearmour
                 SET
                    particlealloc = ?,
                    laseralloc = ?,
                    molecularalloc = ?
                 WHERE 
                    gameid = ?
                    AND shipid = ?
                 "
        ))
        {
            $stmt->bind_param('iiiii', $settings[0][1], $settings[1][1],  $settings[2][1], $gameid, $shipid);
            $stmt->execute();
            $stmt->close();
        }
    }
    catch(Exception $e) {

        throw $e;
    }
}

理想情况下,对于此示例,我希望UPDATE为2/0/0而不是null / null / null.

最佳答案 您的数组填充如下：

$settings = [
    'particle' => [4, 2],
    'laser' => [0, 0],
    'molecular' => [0, 0]
];

我希望能回答这个问题,而无需进一步解释.

它将固定如下：

$stmt->bind_param('iiiii',
    $settings['particle'][1],
    $settings['laser'][1],
    $settings['molecular'][1],
    $gameid,
    $shipid
);
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