php casting variable to array

Question

I am dealing with very strange issue of dealing with garbage in iterating through variable which has been cast to an array

$arr = (array)$var; // problem
$arr = array($var); // ok

The first method seems to work fine on values with integers, but not with strings. Is there any documented difference and does php have real casting ?

The problem is with lavarel 4, Database sources, function on line 704

The second thing is not typecasting, you are creating an one element array, and the element's value is $var. — mishu
– mishu, Commented Jun 24, 2014 at 6:26
This is a PHP bug - fixed in PHP 5.2.7 and higher. What version do you use? — Tyralcori
– Tyralcori, Commented Jun 24, 2014 at 6:31
A first step to provide more information could be to tell us what garbage is. And what the input value is that provides this garbage. — enricog
– enricog, Commented Jun 24, 2014 at 6:43

georg · Accepted Answer · 2014-06-24 07:45:47Z

1

If $var is a scalar, it's documented that both lines do the same:

For any of the types: integer, float, string, boolean and resource, converting a value to an array results in an array with a single element with index zero and the value of the scalar which was converted. In other words, (array)$scalarValue is exactly the same as array($scalarValue).

http://www.php.net/manual/en/language.types.array.php#language.types.array.casting

answered Jun 24, 2014 at 7:45

georg

216k57 gold badges324 silver badges401 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Ulterior Over a year ago

so that means thats a bug, I would expect this functionality

georg Over a year ago

@Ulterior: yes, if you've got a reproducible error case, feel free to file it at bugs.php.net. Both lines must do the same.

tharindu_DG · Accepted Answer · 2014-06-24 06:34:19Z

0

There are two ways to cast a variable in PHP as a specific type.

using the settype() function
using (int) (bool) (float) etc

More Info : http://www.electrictoolbox.com/type-casting-php/

answered Jun 24, 2014 at 6:34

tharindu_DG

9,2997 gold badges54 silver badges69 bronze badges

1 Comment

Ulterior Over a year ago

settype results in same garbage on iterating through an array

Collectives™ on Stack Overflow

php casting variable to array

2 Answers 2

2 Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related