使用循环创建数组并使用循环输入算术进展值

Question

I'm noob in PHP programming and for my surprise I found it difficult to create an array using loop and to input in it values using arithmetic progression with +4 difference.I spent over an hour and tried a lot of code,searched so many examples.Below is my code that work(maybe) but not properly.

   <?php
 $array = [];
for($x=0;$x<10;$x++){
 for($i=0;$i<100;$i+=4){
 $array[] = $i;
 }
 break;
}
var_dump($array);
?>

I must have no more than 10(0-9 key) values,but because of $i the loop continues to 96 up to 24 keys.Maybe it's stupid question but I've totally blocked.

Answer 1

Is that what you want ?

<?php
$array = [];
for($x=0;$x<10;$x++){
   $array[] = $x*4;
}
var_dump($array);
?>

Or maybe simpler

$array = range(0,36,4);

Doc for range : http://php.net/manual/fr/function.range.php