声明一大堆变量[重复]

Question

This question already has an answer here:

• Using braces with dynamic variable names in PHP 8 answers

I have a big list of variables:

$variable_1 = $_POST['variable_1'];
$variable_2 = $_POST['variable_2'];
$variable_3 = $_POST['variable_3'];
$variable_4 = $_POST['variable_4'];
...
..
.
$variable_86 = $_POST['variable_86'];

What would be the best way to declare all of these variables? Should I just declare them all like above, should I put them in an array, can I declare using a loop?

</div>

Answer 1

for ($i = 0; $i <= 86; $i++){
     if (isset($_POST["variable_$i"]))
     ${'variable'.$i} = $_POST["variable_$i"];
}

See this question to learn about Dynamic Variable names.

EDIT: Added the isset command. isset() checks whether a variable is already declared or not