I looked for a little while and didn't find any elegant solutions for
doing this, so first if you have alternate suggestions for the "right"
way to do this, I'd love to hear them. I'm working with a big form to
allow a user to make a change to many database rows at the same time.
The results are getting passed to a PHP script to do the updates, as
three different HTML arrays (i.e., <input name='var1[]'>). While I
could do a normal for loop and just go through each array by its
numerical index, the first thing I tried was using each() on all three
arrays. After seeing some weird results, I made a shorter test script
that illustrates the same problem I've been having.
The problem seems to be that when each() is called multiple times on
different arrays within the same expression, only the last call to
each() assigns its variable correctly. (The other two print_r
statements within the loop show up as the '1's before the array is printed.)
Any thoughts on why this is happening? Is it a bug, or am I just
expecting PHP/while/each to do things that they're not actually supposed
to do?
-brian
------------
--- Code ---
------------
<?php
$letters = array('a','b','c');
$numbers = array(1,2,3);
$bigletters = array('A','B','C');
echo "\n\nOutside of the loop\n\n";
$let = each($letters);
$num = each($numbers);
$cap = each($bigletters);
print_r($let);
print_r($num);
print_r($cap);
echo "\n\nInside the loop\n\n";
reset($letters);
reset($numbers);
reset($bigletters);
while($let = each($letters) && $num = each($numbers) &&
$cap = each($bigletters)) {
print_r($let);
print_r($num);
print_r($cap);
echo "<br><br>\n";
}
?>
--------------
--- Output ---
--------------
Outside of the loop
Array
(
[1] => a
[value] => a
[0] => 0
[key] => 0
)
Array
(
[1] => 1
[value] => 1
[0] => 0
[key] => 0
)
Array
(
[1] => A
[value] => A
[0] => 0
[key] => 0
)
Inside the loop
11Array
(
[1] => A
[value] => A
[0] => 0
[key] => 0
)
<br><br>
11Array
(
[1] => B
[value] => B
[0] => 1
[key] => 1
)
<br><br>
11Array
(
[1] => C
[value] => C
[0] => 2
[key] => 2
)
<br><br>
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