PHP: Create Unique Variables In A For Loop

Question

I was wondering if it is possible to create unique variables in a for loop using PHP. I tried the following code but it didn't work:

$level_count = 6

for ($i=1; $i<=$level_count; $i++) {
    $level_ + $i = array();
}

I would like to end up with the variables $level_1, $level_2, $level_3, $level_4, $level_5 and $level_6. How would I achieve this?

Arrays have been invented to stop you from doing what you are doing now. — zerkms
– zerkms, Commented Sep 29, 2014 at 20:13
Thanks @zerkms I'm pretty new to PHP so I didn't know this approach was frowned upon — G-SCO
– G-SCO, Commented Sep 29, 2014 at 20:30

Sebas · Accepted Answer · 2014-09-29 20:18:52Z

2

$level_count = 6

for ($i=1; $i<=$level_count; $i++) {
    $l = "level" . $i;
    $$l = array();
}

But Zerkms is right...

$arr = array(array(),array(),array(),array(),array(),array());

answered Sep 29, 2014 at 20:18

Sebas

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Comments

silkfire · Accepted Answer · 2014-09-29 20:26:08Z

2

It's much easier if you use arrays for this. Try this one-liner:

$level_count = 6;

$array = array_fill_keys(array_map(function($index) {
                                       return 'level_' . $index;
                                   }, range(1, $level_count)), array());

var_dump($array);

edited Sep 29, 2014 at 20:26

answered Sep 29, 2014 at 20:20

silkfire

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Comments

Cheery · Accepted Answer · 2014-09-29 20:18:24Z

1

Weird thing (I have no idea why you want to use it), but, just for educational purposes...

$level_count = 6;

for ($i = 1; $i <= $level_count; $i++) {
    $name = 'level_' . $i;
    $$name = array();
}

answered Sep 29, 2014 at 20:18

Cheery

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2 Comments

Sebas Over a year ago

killed me with 10 seconds :)

Cheery Over a year ago

@Sebas I spent some time trying to explain why I wrote this code in the first place )))

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