--TEST--
mb_str_split() tests UTF-8 illegal chars & UTF-16 surrogate pairs
--EXTENSIONS--
mbstring
--INI--
output_handler=
--FILE--
<?php
ini_set('include_path','.');
include_once('common.inc');

/* 123 string and 4-bytes length character 0xf09280a9 */
$utf8 = pack("H*", "313233f09280a9");

/* 123 string and 4-bytes length character 0xf09280a9 head without tail */
$utf8_bad = pack("H*", "313233f092");

/* very first and very last utf-16 4-bytes characters  */
$utf16_first_be = pack("H*", "d800dc00");
$utf16_first_le = pack("H*", "00d800dc");

$utf16_last_be = pack("H*", "dbffdfff");
$utf16_last_le = pack("H*", "ffdbffdf");
$utf16be_char_bad = pack("H*", "dc00dc00"); /* this char is illegal because it starts from low surrogate char */
$utf16le_char_bad = pack("H*", "00dc00dc"); /* this char is illegal because it starts from low surrogate char */


$utf16be = $utf16_first_be . $utf16_last_be;
$utf16le = $utf16_first_le . $utf16_last_le;

$utf16be_bad = $utf16_first_be . $utf16be_char_bad;
$utf16le_bad = $utf16_first_le . $utf16le_char_bad;

/* print each chunk as HEX string */
echo "UTF-8:";
foreach(mb_str_split($utf8, 2) as $chunk){
    printf(" l:%d v:%s", strlen($chunk), unpack("H*", $chunk)[1]);
}
echo PHP_EOL;

echo "BAD UTF-8:";
foreach(mb_str_split($utf8_bad, 2) as $chunk){
    printf(" l:%d v:%s", strlen($chunk), unpack("H*", $chunk)[1]);
}
echo PHP_EOL;

echo "UTF-16BE:";
foreach(mb_str_split($utf16be, 1, "UTF-16BE") as $chunk){
    printf(" l:%d v:%s", strlen($chunk), unpack("H*", $chunk)[1]);
}
echo PHP_EOL;

echo "UTF-16LE:";
foreach(mb_str_split($utf16le, 1, "UTF-16LE") as $chunk){
    printf(" l:%d v:%s", strlen($chunk), unpack("H*", $chunk)[1]);
}
echo PHP_EOL;

echo "BAD UTF-16BE:";
foreach(mb_str_split($utf16be_bad, 1, "UTF-16BE") as $chunk){
    printf(" l:%d v:%s", strlen($chunk), unpack("H*", $chunk)[1]);
}
echo PHP_EOL;

echo "BAD UTF-16LE:";
foreach(mb_str_split($utf16le_bad, 1, "UTF-16LE") as $chunk){
    printf(" l:%d v:%s", strlen($chunk), unpack("H*", $chunk)[1]);
}
echo PHP_EOL;

var_dump(mb_str_split("", 1, "ASCII"));
var_dump(mb_str_split("", 1, "UTF-8"));
var_dump(mb_str_split("", 1, "UTF-16LE"));

?>
--EXPECT--
UTF-8: l:2 v:3132 l:5 v:33f09280a9
BAD UTF-8: l:2 v:3132 l:3 v:33f092
UTF-16BE: l:4 v:d800dc00 l:4 v:dbffdfff
UTF-16LE: l:4 v:00d800dc l:4 v:ffdbffdf
BAD UTF-16BE: l:4 v:d800dc00 l:2 v:003f l:2 v:003f
BAD UTF-16LE: l:4 v:00d800dc l:2 v:3f00 l:2 v:3f00
array(0) {
}
array(0) {
}
array(0) {
}