php数字变量名称

Question

I want to append some $variables automaticly and set their names numeric I have a script look like this:

<?php 
$i=0;
while($i<=100){

$variable_[$i]=$i;
$i++;
#with "[$i]" I mean their name will be $variable_1 , $variable_2, $variable_3 ... 
#they will be automatic increased variables non manual!

}
?>

Answer 1

This is called variable variables .

You can set a variable variable by defining its name inside a variable, such as:

$name = 'variable_' . $i;

and then assign a value to it by doing:

$$name = $i;

Note that variable variables can easily be misused. Make sure you completely understand the repercussions of this feature on your code and the risk of having bugs, and ensure this is the only solution you have, ie you can't use an array ( $variables[$i] = $i; ) instead.

Answer 2

Its better to use Array with key=> value pair. You can build this array dynamically and then loop through it by using foreach.