php - 简化大量代码

Question

有没有办法让这段代码缩短 $val1 $val2 ....... 的值是查询的结果

$val1 = 1;
$val2 = 2;
$val3 = 3;
$val4 = 4;
$val5 = 5;
$val6 = 8;
$val7 = 7;
$val8 = 8;
$val9 = 8;
$val10 = 9;
$val11 = 13;
$val12 = 12;

echo $val1.",".$val2.",".$val3.",".$val4.",".$val5.",".$val6.",".$val7.",".$val8.",".$val9.",".$val10.",".$val11.",".$val12; 

?>

有没有办法简化这个

echo $val1.",".$val2.",".$val3.",".$val4.",".$val5.",".$val6.",".$val7.",".$val8.",".$val9.",".$val10.",".$val11.",".$val12; 

Answer 1

使用array()和implode()：

$values = array(1, 2, 3, 4, 5, 8, 7, 8, 8, 9, 13, 12);
echo implode(',', $values);

Answer 2

这就是数组的用途：

$vals = range(1, 12);
echo implode(',', $vals);

如果您没有直接创建数组，则应先将编号变量转换为数组：

$vals = array($var1, $var2, $var3, ... , $var12);
echo implode(',', $vals);

对于单个 echo 调用，这不会有太大变化，但通常您可以在代码中将其向上移动以降低复杂性。

Answer 3

将它放在一个数组中并循环遍历它可能会起作用。

$values = array(1, 2, 3, 4, 5, 6);
foreach ($values as $key => $value) {
   echo $value;
}