在php中将字符串拆分为字符串数组和拆分字符数。

Question

我需要将一个字符串拆分成一个单字符字符串数组，并获得拆分字符的计数。

分裂“字符”将给数组"c", "h", "a", "r", "a", "c", "t", "e", "r"。

编辑

是否可以使用内置函数获得计数分裂的字符串字符？

Array ( [c] => 2 [h] => 1 [a] => 2 [r] => 2 [t] => 1 [e] => 1 ) 

Answer 1

使用str_split

$array = str_split("cat");

试试count_chars

<?php
$data = "Two Ts and one F.";

foreach (count_chars($data, 1) as $i => $val) {
   echo "There were $val instance(s) of \"" , chr($i) , "\" in the string.\n";
}
?>

上面的示例将输出：

There were 4 instance(s) of " " in the string.
There were 1 instance(s) of "." in the string.
There were 1 instance(s) of "F" in the string.
There were 2 instance(s) of "T" in the string.
There were 1 instance(s) of "a" in the string.
There were 1 instance(s) of "d" in the string.
There were 1 instance(s) of "e" in the string.
There were 2 instance(s) of "n" in the string.
There were 2 instance(s) of "o" in the string.
There were 1 instance(s) of "s" in the string.
There were 1 instance(s) of "w" in the string.

Answer 2

[ $array ]

$array = str_split('Cat');

与str_split() 拆分后的将如下所示：

ARRAY
{
   [0] = 'C'
   [1] = 'a'
   [2] = 't'
}

对编辑问题的回答

是的，您可以使用函数count_chars()

$str = "CHARACTERS";

$array = array();

foreach (count_chars($str, 1) as $i => $val) {
   array[] = array($str, $i);
}

将输出以下内容：

ARRAY
{
   [0] = ARRAY("C" => 2)
   [1] = ARRAY("H" => 1)
}

等

Answer 3

使用php函数拆分，这里的示例如下：

$array = str_split("cat");