从foreach循环创建多个变量

Question

我有这个脚本从API获取天气数据。 但我需要每天的温度都是单独的。 $ day1Max，$ day1Min，$ day2Max，$ day2Min等......

是否可以从foreach循环中获取这些变量？

<?php

$conditions_week = $forecast->getForecastWeek($latitude, $longitude);

echo "Forecast this week:\n";

foreach($conditions_week as $conditions) {
?>  

<tr>
<th><?php     echo $conditions->getTime('Y-m-d') . ': ' . $conditions->getMaxTemperature() . "\n"; ?></th>
<th><?php     echo $conditions->getTime('Y-m-d') . ': ' . $conditions->getMinTemperature() . "\n"; ?></th>
</tr>
<?php
}
?>

<?php $conditions_week = $forecast->getForecastWeek($latitude, $longitude); echo "Forecast this week:\n"; foreach($conditions_week as $conditions) { ?> <tr> <th><?php echo $conditions->getTime('Y-m-d') . ': ' . $conditions->getMaxTemperature() . "\n"; ?></th> <th><?php echo $conditions->getTime('Y-m-d') . ': ' . $conditions->getMinTemperature() . "\n"; ?></th> </tr> <?php } ?>

这是输出：

Answer 1

以下是您的解决方案：

<?php

class Conditions{
    function __construct($min,$max){
         $this->max = $max;
         $this->min = $min;
    }

    function getMaxTemperature(){
        return $this->max;
    }
    function getMinTemperature(){
        return $this->min;
    }
}

$conditions_week = array(new Conditions(5,10),new Conditions(-5,3));

echo "Forecast this week:\n";

foreach($conditions_week as $k=>$conditions) {
$varMin = "day".($k+1)."min";
$varMax = "day".($k+1)."max";
$$varMin = $conditions->getMinTemperature();
$$varMax = $conditions->getMaxTemperature();
?>  

<tr>
<th><?php     echo "Max : ". $conditions->getMaxTemperature() . "\n"; ?></th>
<th><?php     echo "Min : ". $conditions->getMinTemperature() . "\n"; ?></th>
</tr>
<?php

}


echo "day1min : " . $day1min;
echo '<br>';
echo "day1max : " . $day1max;
echo "<hr>";
echo "day2min : " . $day2min;
echo '<br>';
echo "day2max : " . $day2max;

你可以在foreach中生成你的php变量$ day1min，$ day1max ...然后你可以在循环之外使用它。

以下是完整示例：https://3v4l.org/vX5bW