PHP:将字符串分割成数组，比如爆炸时没有分隔符

I have a string such as:

我有一个字符串，比如:

"0123456789"

“0123456789”

and need to split EACH character into an array.

并且需要将每个字符分割成一个数组。

I for the hell of it tried:

我拼命地想:

explode('', '123545789');

But it gave me the obvious: Warning: No delimiter defined in explode) ..

但它给了我一个明显的提示:警告:在blow中没有定义分隔符。

How would I come across this? I can't see any method off hand, especially just a function

我怎么会遇到这种情况呢?我不能马上看到任何方法，尤其是一个函数

9 个解决方案

#1

$array = str_split("0123456789bcdfghjkmnpqrstvwxyz");

str_split takes an optional 2nd param, the chunk length (default 1), so you can do things like:

str_split接受第二个可选参数，即块长度(默认为1)，因此您可以执行以下操作:

$array = str_split("aabbccdd", 2);

// $array[0] = aa
// $array[1] = bb
// $array[2] = cc  etc ...

You can also get at parts of your string by treating it as an array:

您还可以通过将字符串作为数组处理来获得部分字符串:

$string = "hello";
echo $string[1];

// outputs "e"

#2

What are you trying to accomplish? You can access characters in a string just like an array:

你想要完成什么?您可以访问字符串中的字符，就像数组一样:

$s = 'abcd';
echo $s[0];

prints 'a'

打印“a”

#3

Try this:

试试这个:

$str = '123456789';
$char_array = preg_split('//', $str, -1, PREG_SPLIT_NO_EMPTY);

#4

str_split can do the trick. Note that strings in PHP can be accessed just like a chars array, in most cases, you won't need to split your string into a "new" array.

str_split可以实现这个功能。注意，PHP中的字符串可以像chars数组一样访问，在大多数情况下，您不需要将字符串分割为一个“新”数组。

#5

Here is an example that works with multibyte ( UTF-8 ) strings.

下面是一个处理多字节(UTF-8)字符串的示例。

$str = 'äbcd';

// PHP 5.4.8 allows null as the third argument of mb_strpos() function
do {
    $arr[] = mb_substr( $str, 0, 1, 'utf-8' );
} while ( $str = mb_substr( $str, 1, mb_strlen( $str ), 'utf-8' ) );

It can be also done with preg_split() ( preg_split( '//u', $str, null, PREG_SPLIT_NO_EMPTY ) ), but unlike the above example, that runs almost as fast regardless of the size of the string, preg_split() is fast with small strings, but a lot slower with large ones.

它还可以使用preg_split() (preg_split('//u'， $str, null, PREG_SPLIT_NO_EMPTY))，但是不像上面的例子那样，不管字符串的大小如何，preg_split()都是快速的，但与大字符串相比要慢得多。

#6

Try this:

试试这个:

    $str = '546788';
    $char_array = preg_split('//', $str, -1, PREG_SPLIT_NO_EMPTY);

#7

Try this:

试试这个:

$str = "Hello Friend";

$arr1 = str_split($str);
$arr2 = str_split($str, 3);

print_r($arr1);
print_r($arr2);

The above example will output:

上面的示例将输出:

Array
(
    [0] => H
    [1] => e
    [2] => l
    [3] => l
    [4] => o
    [5] =>
    [6] => F
    [7] => r
    [8] => i
    [9] => e
    [10] => n
    [11] => d
)

Array
(
    [0] => Hel
    [1] => lo
    [2] => Fri
    [3] => end
)

#8

If you want to split the string, it's best to use:

如果你想拆分字符串，最好使用:

$array = str_split($string);

When you have delimiter, which separates the string, you can try,

当你有分隔字符串的分隔符时，你可以尝试，

explode('' ,$string);

Where you can pass the delimiter in the first variable inside the explode such as:

在爆炸中，您可以传递第一个变量中的分隔符，例如:

explode(',',$string);

#9

$array = str_split("$string");

will actuall work pretty fine, BUT if you want to preserve the special characters in that string, and you want to do some manipulation with them, THAN I would use

实际上可以很好地工作，但是如果你想保留字符串中的特殊字符，并且你想对它们进行一些操作，比我想要的要多

do {
    $array[] = mb_substr( $string, 0, 1, 'utf-8' );
} while ( $string = mb_substr( $string, 1, mb_strlen( $string ), 'utf-8' ) );

because for some of mine personal uses, it has been shown to be more reliable when there is an issue with special characters

因为在我的一些个人用途中，当有特殊字符的问题时，它被证明是更可靠的