I m sure this has been asked before but I can t find it. The PHP documentation unclear on this and I can t find any examples like this. Is it legal to use variables in the declaration of an array use the array() construct? Not as keys, as the values. Like this:
function myFunc($value1, $value2, $value3) {
$myArr = array( value1 => $value1, value2 => $value2, value3 => $value3);
return $myArr;
}
Is that legal?
Yes, that is legal. Otherwise you would get an error.
both keys and values can be arbitrary expressions*
$r = array(
phpversion() => 1 + 2 - 3,
);
Yes, it s absolutely legal! You can also use variables for the key names:
$myArr = array($thekey => $theval);
The key or value for any key/value pair doesn t need to be in any particular format, it just needs to evaluate out to a primitive type (i.e.: a number or string). The array() construct simply looks for the "simplified" values that it s passed; it doesn t care what they are or how they got there.
Hope this helps!
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