Question

我正在使用Laravel 4和PHP来构建新的应用程序。它在运行PHP 5.4.x的开发服务器上工作正常但是我的老板坚持要运行5.3.2版本

我花了整整一天来修复所有与5.3.2一起使用的东西，几乎拥有一切，所以我想，直到我遇到下面代码的问题。

我的问题从这条线开始......
DB::transaction(function($clock_in_webcam_image) use ($clock_in_webcam_image)

我相信这种类型的代码可能不适用于此版本的PHP？如果是这种情况，我可以选择运行相同的代码或让它执行相同的操作吗？

感谢任何帮助。非常不幸的是，我的老板直接告诉我，不，他不会允许我们更新到更新的PHP，所以我现在陷入困境

// Create a new time card record when a User Clocks In
public function createTimeCard($clock_in_webcam_image) {
    // Create both Timecard and timecard record tables in a Transaction
    DB::transaction(
        function ($clock_in_webcam_image) use ($clock_in_webcam_image) {
            $timeCard = DB::table('timeclock_timecard')->insertGetId(
                array(
                    'user_id'               => $this->user->user_id,
                    'clock_in_datetime'     => $this->dateTime->format($this->dateFormat),
                    'clock_in_timestamp'    => $this->dateTime->getTimestamp(),
                    'clock_in_webcam_image' => $clock_in_webcam_image
                )
            );

            $timeCardPunchEntry = DB::table('timeclock_punch_entry')
                ->insertGetId(
                    array(
                        'timecard_id'          => $timeCard,
                        'user_id'              => $this->user->user_id,
                        'created_at_datetime'  => $this->dateTime->format($this->dateFormat),
                        'created_at_timestamp' => $this->dateTime->getTimestamp(),
                        'clock_type'           => 'clock_in',
                        'webcam_image'         => $clock_in_webcam_image
                    )
                );

            return $timeCard;
        }
    );
}

更新

回应bansi的评论......这就是你的意思......

DB::transaction(function() use($myModel){
    $myModel->updateTable1();
    $myModel->updateTable2();
})

Answer 1

在PHP 5.4.0之前，您无法在anonymous function中使用$this。虽然您可以使用use构造将变量传递到函数范围，但有一个简单的解决方法。此外，您正在错误地使用use构造，因为父作用域中未定义$clock_in_webcam_image。

$user = $this->user;
$dateTime = $this->dateTime;

DB::transaction(function($clock_in_webcam_image) use ($user, $dateTime) {
    // snip

    array(
        'user_id' => $user->user_id,
        'clock_in_datetime' => $dateTime->format($this->dateFormat),
        'clock_in_timestamp' => $dateTime->getTimestamp(),
        'clock_in_webcam_image' => $clock_in_webcam_image
    )

    // snip
});

Answer 2

试试这个。请检查您没有定义另一个insertTimecard。

// Create a new time card record when a User Clocks In
public function createTimeCard($clock_in_webcam_image)
{

    // Create both Timecard and timecard record tables in a Transaction
    DB::transaction($this->insertTimecard($clock_in_webcam_image));
}


private function insertTimecard($clock_in_webcam_image)
{
    $timeCard = DB::table('timeclock_timecard')->insertGetId(
        array(
                'user_id' => $this->user->user_id,
                'clock_in_datetime' => $this->dateTime->format($this->dateFormat),
                'clock_in_timestamp' => $this->dateTime->getTimestamp(),
                'clock_in_webcam_image' => $clock_in_webcam_image
        )
    );

    $timeCardPunchEntry = DB::table('timeclock_punch_entry')->insertGetId(
        array(
                'timecard_id' => $timeCard,
                'user_id' => $this->user->user_id,
                'created_at_datetime' => $this->dateTime->format($this->dateFormat),
                'created_at_timestamp' => $this->dateTime->getTimestamp(),
                'clock_type' => 'clock_in',
                'webcam_image' => $clock_in_webcam_image
        )
    );
    return $timeCard;
}

PHP 5.3.2替代在匿名函数中使用$ this？

2 个答案: