PHP Source:
<
!DOCTYPE
html
>
<
html
>
<
body
>
<?php
function
test_odd($
var
)
{
return
($
var
&
1
);
}
$a1=
array
(
"a"
,
"b"
,
2
,
3
,
4
);
print_r(array_filter($a1,
"test_odd"
));
?>
<
/body
>
<
/html
>
Result: