what does the assignment in this loop do? I don't get the array notation in it :S
foreach($fieldvalues as $fieldvalue){
$insertvalues[] = $fieldvalue;
}
views:
111answers:
5
+1
A:
It inserts a new item at the end of the array.
Other languages tend to have an append or push function for this.
David Dorward
2010-05-18 08:13:31
PHP also does - http://php.net/manual/en/function.array-push.php
Finbarr
2010-05-18 08:16:03
A:
It adds the value of $fieldvalue at the end of $insertvalues array. The [] creates an array and values of the specified variable are added to it at the end each time.
Sarfraz
2010-05-18 08:14:33
+3
A:
$insertvalues[] means insert a new item into the array, its a shortcut of array_push(). Its also preferred as it created lesser overhead whilst the PHP is working.
Additional:
For those who are unsure how the loop works.
foreach($fieldvalues as $fieldvalue)
every time the loop... loops, the value $fieldvalue becomes the next value a pointer is looking it in the array $fieldvalues - thus adding this to a new array `$insertvalues by means of the shortcut syntax mentioned above.
Glycerine
2010-05-18 08:22:50
The syntax is not actually a shortcut for the `array_push` function; the `array_push` function is distinct as it adds one or more elements to the end of the given array. The `array_push` function is infact a shortcut for a loop over an array of provided elements to add to the end of a given array argument, and the `array_push` function uses the `$array[] = $value` syntax - a language feature - to achieve this.
Finbarr
2010-05-18 08:34:49
OK, my semantics were incorrect I agree. I have read [] for a single adding of an item into an array is preferable. Or did I read nonsense?
Glycerine
2010-05-18 08:38:56
[] for a single item is preferable, as it avoids the overhead of a function call.
Finbarr
2010-05-18 08:42:05