Is there any method (that doesn't use loop or recursion) to create and fill an array with values?
To be precise, I want to have an effect of
$t = array();
for($i = 0; $i < $n; $i++){
$t[] = "val";
}
But simpler.
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I know this question is kinda old, but how to fill the array with range of int instead of string ?Mohammed Joraid– Mohammed Joraid2012-10-17 10:27:55 +00:00Commented Oct 17, 2012 at 10:27
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5 Answers
I think you can use
$array = array_pad(array(), $n, "val");
to get the desired effect.
See array_pad() on php.net
Comments
$a = array('key1'=>'some value', 'KEY_20'=>0,'anotherKey'=>0xC0DEBABE);
/* we need to nullify whole array with keep safe keys*/
$a = array_fill_keys(array_keys($a),NULL);
var_export($a);
/*result:
array(
'key1'=>NULL,
'KEY_20'=>NULL,
'anotherKey'=>NULL
);
*/
Comments
It depends what you mean. There are functions to fill arrays, but they will all use loops behind the scenes. Assuming you are just looking to avoid loops in your code, you could use array_fill:
// Syntax: array_fill(start index, number of values; the value to fill in);
$t = array_fill(0, $n, 'val');
I.e.
<?php
$t = array_fill(0, 10, 'val');
print_r($t);
?>
Will give:
Array (
[0] => val
[1] => val
[2] => val
[3] => val
[4] => val
[5] => val
[6] => val
[7] => val
[8] => val
[9] => val
)
Comments
$a = array();
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
$a[] = "value";
you get the idea
3 Comments
Iznogood
How is that simpler for him? Itsthe same thing with more code and its harderto keep track of how many items you are creating. EDIT:just realised you indeed fulfill his demand ofno loops but really.
Stephen
Because that's the only way to fill an array without a loop. Any other method is using a loop behind the scenes regardless.
Chris
@Iznogood yes really, he asked i answered, dont burn the messenger. :-)