<?php
$a = array('qw', array('as', 'as'));
$b = &$a[1];
$c = $a;
var_dump($a);
echo '<br>';
unset($c[1][1]);
var_dump($a);
array
0 => string 'qw' (length=2)
1 => &
array
0 => string 'as' (length=2)
1 => string 'as' (length=2)
array
0 => string 'qw' (length=2)
1 => &
array
0 => string 'as' (length=2)
без ссылки
<?php
$a = array('qw', array('as', 'as'));
//$b = &$a[1];
$c = $a;
var_dump($a);
echo '<br>';
unset($c[1][1]);
var_dump($a);
array
0 => string 'qw' (length=2)
1 =>
array
0 => string 'as' (length=2)
1 => string 'as' (length=2)
array
0 => string 'qw' (length=2)
1 =>
array
0 => string 'as' (length=2)
1 => string 'as' (length=2)
http://bugs.php.net/bug.php?id=20993
