blocks|key|1037031|text|我认为str_split是你想要的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1037032|拆分-将字符串转换为数组|offset|length|1037033|<?php
$arr+=+str_split("Hello");
?>|code-block|syntax|javascript|1037034|将产生|1037035|Array
(
++++[0]+=>+H
++++[1]+=>+e
++++[2]+=>+l
++++[3]+=>+l
++++[4]+=>+o
}|1037036|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/manual/en/function.str-split.php^0|0|0|C|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@$D|Y|E|Z|1|10]]|A|$]]|$1|F|3|G|5|H|7|11|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|13|8|@]|9|@]|A|$I|J]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

I think str_split is what you are after

<a href="http://www.php.net/manual/en/function.str-split.php" rel="noreferrer">str_split — Convert a string to an array</a>

<pre><code>&lt;?php
$arr = str_split("Hello");
?&gt;
</code></pre>

will produce

<pre><code>Array
(
 [0] =&gt; H
 [1] =&gt; e
 [2] =&gt; l
 [3] =&gt; l
 [4] =&gt; o
}
</code></pre>

blocks|key|1037304|text|第一个参数是必需的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1037305|explode(separator,string,limit)

[separator]:+required;
[string]:+required;
[limit]:+alternative.|code-block|syntax|javascript|1037306|带空分离器的爆炸功能是没有意义的。|1037307|就这样。O(∩_∩)O~|1037308|entityMap^0|6|3|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|V|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

the first parameter is required.

<pre><code>explode(separator,string,limit)

[separator]: required;
[string]: required;
[limit]: alternative.
</code></pre>

An explode function with a void [separator] is meaningless.

That's all.O(∩_∩)O~

blocks|key|1037310|text|如果处理多字节UTF-8字符串，则应使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1037311|$array+=+preg_split('//u',+$My_String,-1,+PREG_SPLIT_NO_EMPTY);|code-block|syntax|javascript|1037312|否则，您只需使用：|1037313|$array+=+str_split($My_String);|1037314|原因在手册中有说明。|offset|length|1037315|当处理多字节编码字符串时，str_split()将拆分为字节，而不是字符。|blockquote|style|BOLD|1037316|从PHPVersion7.4开始，添加了相当于str_split的mbstring，因此您现在可以使用：|1037317|$array+=+mb_str_split($my_string);|1037318|手册页|1037319|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/function.str-split.php|1|https://www.php.net/manual/en/function.mb-str-split.php^0|0|0|0|0|3|2|0|0|D|B|0|0|0|0|3|1|0^^$0|@$1|2|3|4|5|6|7|19|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|1A|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|1B|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|1C|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|1D|8|@]|9|@$M|1E|N|1F|1|1G]]|A|$]]|$1|O|3|P|5|Q|7|1H|8|@$M|1I|N|1J|R|S]]|9|@]|A|$]]|$1|T|3|U|5|6|7|1K|8|@]|9|@]|A|$]]|$1|V|3|W|5|D|7|1L|8|@]|9|@]|A|$E|F]]|$1|X|3|Y|5|6|7|1M|8|@]|9|@$M|1N|N|1O|1|1P]]|A|$]]|$1|Z|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]]|10|$11|$5|12|13|14|A|$15|16]]|17|$5|12|13|14|A|$15|18]]]]

If dealing with multi-byte UTF-8 strings you should use:
<pre><code>$array = preg_split('//u', $My_String,-1, PREG_SPLIT_NO_EMPTY);
</code></pre>
Otherwise you can just use:
<pre><code>$array = str_split($My_String);
</code></pre>
The reason is noted in <a href="http://php.net/manual/en/function.str-split.php" rel="noreferrer">the manual</a>:
<blockquote>
str_split() will split into bytes, rather than characters when dealing with a multi-byte encoded string.
</blockquote>
Starting from PHP version 7.4 the mbstring equivalent of str_split was added so you can now use:
<pre><code>$array = mb_str_split($my_string);
</code></pre>
<a href="https://www.php.net/manual/en/function.mb-str-split.php" rel="noreferrer"><code>mb_str_split</code> manual page</a>

blocks|key|2550840|text|//This+will+return+error!!
+explode('',+'aaa');
//PHP+Error:++explode():+Argument+#1+($separator)+cannot+be+empty...

//Change+to+str_split
str_split('aaa');

[
+++++"a",
+++++"a",
+++++"a",
]|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2550841|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre class="lang-php prettyprint-override"><code>//This will return error!!
 explode('', 'aaa');
//PHP Error: explode(): Argument #1 ($separator) cannot be empty...

//Change to str_split
str_split('aaa');

[
 &quot;a&quot;,
 &quot;a&quot;,
 &quot;a&quot;,
]
</code></pre>

In javascript, <code>var myStringToArray = myString.split('');</code> is perfectly acceptable.

But in PHP, <code>$My_String_To_Array = explode('', $My_String);</code> throws an error:

<blockquote>
 Warning: explode() Empty delimiter
</blockquote>

The PHP manual (<a href="http://php.net/manual/en/function.explode.php" rel="noreferrer">http://php.net/manual/en/function.explode.php</a>) explains:

<blockquote>
 If delimiter is an empty string (""), explode() will return FALSE.
</blockquote>

So what should I be using in contemporary PHP instead of <code>explode('', $My_String)</code>?

So far, the alternatives I can see are:

<ul>
<li><code>split("", $My_String)</code> - deprecated as of PHP 5.3.0</li>
<li><code>str_split($My_String)</code></li>
<li><code>preg_split('//', $My_String)</code></li>
</ul>

Seven years ago, <code>str_split()</code> would have been the correct alternative to use.

But is <code>str_split()</code> still in contemporary usage or should I only be looking at <code>preg_split()</code> ?

Or should I be looking at something else?

"Empty delimiter" Warning when using PHP explode() function

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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在javascript中，var myStringToArray = myString.split('');是完全可以接受的。但是在PHP中，$My_String_To_Array = explode('', $My_String);抛出一个错误：警告:爆炸性()空分隔符PHP手册()解释道：如果分隔符是空字符串(""...

问使用PHP ()函数时的“空分隔符”警告
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问使用PHP ()函数时的“空分隔符”警告EN