On 24/07/07, Chris Mika <[EMAIL PROTECTED]> wrote:
I don't know if I'm doing something wrong or if this is a bug.
Very simply: I created an array with values 1-5. I use a foreach loop to
iterate over it to add 1 to the values. It correctly iterates over the
array except for the last value.
Code:
<?php
$test = array(1, 2, 3, 4, 5);
print "original: <br>";
foreach ($test as $part) {
print "($part) ";
}
print "<br> changing: <br>";
foreach ($test as &$part) {
print "($part -> ";
$part ++;
print "$part) ";
}
At this point $part is a reference to the last element of $test,
so every time you change $part, you also change that last element.
print "<br>final:<br>";
foreach ($test as $part) {
print "($part) ";
}
So if you did a var_dump of $test inside this loop you'd see the last
element changing each time a new value's assigned to $part, probably
something like this:
array(5) { [0]=> int(2) [1]=> int(3) [2]=> int(4) [3]=> int(5) [4]=> ?(2) }
array(5) { [0]=> int(2) [1]=> int(3) [2]=> int(4) [3]=> int(5) [4]=> ?(3) }
array(5) { [0]=> int(2) [1]=> int(3) [2]=> int(4) [3]=> int(5) [4]=> ?(4) }
array(5) { [0]=> int(2) [1]=> int(3) [2]=> int(4) [3]=> int(5) [4]=> ?(5) }
array(5) { [0]=> int(2) [1]=> int(3) [2]=> int(4) [3]=> int(5) [4]=> ?(5) }
Does that make sense?
-robin
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