Viewing file:  foreach_nested_same_array.php (1.17 KB) -rw-rw-r--
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<?php
$a = array ("a" => "A", "b" => "B", 0 => 7, "a" => "Z");
foreach ($a as $x)
{
var_export ($x);
foreach ($a as $y)
{
var_export ($y);
}
echo "\n";
}
echo "----------------------------------\n";
var_export ($x);
var_export ($y);
// outer with reference, inner without
foreach ($a as &$x)
{
var_export ($x);
foreach ($a as $y)
{
var_export ($y);
}
echo "\n";
}
echo "----------------------------------\n";
var_export ($x);
var_export ($y);
// inner with reference, outer without
// implicit unset $x here
foreach ($a as $x)
{
var_export ($x);
foreach ($a as &$y)
{
var_export ($y);
}
echo "\n";
}
echo "----------------------------------\n";
var_export ($x);
var_export ($y);
// with references
foreach ($a as &$x)
{
var_export ($x);
foreach ($a as &$y)
{
var_export ($y);
}
echo "\n";
}
echo "----------------------------------\n";
var_export ($x);
var_export ($y);
// try altering the array
$a = array ("a" => "A", "b" => "B", 0 => 7, "a" => "Z");
foreach ($a as &$x)
{
var_export ($x);
$x *= 2;
foreach ($a as &$y)
{
$y *= 3;
var_export ($y);
}
}
var_export ($x);
var_export ($y);
?>
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