2

我想创建一个函数 countWords($str),它接受任何字符串并找到每个单词出现的次数。经验:

“你好世界”

字符 || 发生的次数

h                   1
e                   1
l                   3
o                   2
w                   1
r                   1
d                   1

帮我 !!

谢谢....

4

2 回答 2

2

尝试这个:

<?php
$str = 'hello world';
$str = str_replace(' ', '', $str);
$arr = str_split($str);

$rep = array_count_values($arr);

foreach ($rep as $key => $value) {

echo $key . "  =  " . $value . '<br>';

}

输出:

h = 1
e = 1
l = 3
o = 2
w = 1
r = 1
d = 1
于 2013-09-04T18:03:14.827 回答
0

这是一种计算任何匹配项并返回数字的方法

<?php

function counttimes($word,$string){

    //look for the matching word ignoring the case.
    preg_match_all("/$word/i", $string, $matches);  

    //count all inner array items - 1 to ignore the initial array index
    return count($matches, COUNT_RECURSIVE) -1;     
}

$string = 'Hello World, hello there Hello World';
$word = 'h';

//call the function
echo counttimes($word,$string);

?>
于 2013-09-04T15:53:31.280 回答