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1楼
巨大八爪鱼
2015-2-24 11:36
<?php
function str_split_unicode($str, $l = 0) {
return preg_split('/(.{'.$l.'})/us', $str, -1, PREG_SPLIT_NO_EMPTY|PREG_SPLIT_DELIM_CAPTURE);
}
$array = str_split_unicode("¿Habla usted español?");
print_r($array);
echo "<hr>";
while (list($i, $v) = each($array)) {
echo "$i , $v<br>";
}
echo "<hr>";
foreach ($array as $i => $v) {
echo "$i , $v<br>";
}
echo "<hr>";
$array = array("A" => "papá", "B" => "tendré", "C" => "cereza", "Ch" => "leche", "Ñ" => "niño", "R" => "rojo");
while (list($i, $v) = each($array)) {
echo "$i , $v<br>";
}
?>
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2楼
巨大八爪鱼
2015-2-24 11:37
運行結果：
Array
(
[0] => ¿
[1] => H
[2] => a
[3] => b
[4] => l
[5] => a
[6] =>
[7] => u
[8] => s
[9] => t
[10] => e
[11] => d
[12] =>
[13] => e
[14] => s
[15] => p
[16] => a
[17] => ñ
[18] => o
[19] => l
[20] => ?
)
0 , ¿
1 , H
2 , a
3 , b
4 , l
5 , a
6 ,
7 , u
8 , s
9 , t
10 , e
11 , d
12 ,
13 , e
14 , s
15 , p
16 , a
17 , ñ
18 , o
19 , l
20 , ?
0 , ¿
1 , H
2 , a
3 , b
4 , l
5 , a
6 ,
7 , u
8 , s
9 , t
10 , e
11 , d
12 ,
13 , e
14 , s
15 , p
16 , a
17 , ñ
18 , o
19 , l
20 , ?
A , papá
B , tendré
C , cereza
Ch , leche
Ñ , niño
R , rojo
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3楼
巨大八爪鱼
2015-2-24 11:38
可見，while (list($i, $v) = each($array)) 與 foreach ($array as $i => $v) 完全等價。$i既可能是數字，也可能是字符串。
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