以递归方式搜索数组值中的字符串值？

问题描述：

new with recursive thing and i want to create search engine depend on value user typing and get it from array values all word in value that user typing

for example i have this array :

$array = array('it', 'pro', 'gram', 'mer', 'programmer');
$string = "itprogrammer";

sorry bad grammar. if anyone can help i appreciate it a lot. thanks you for your help.

new with recursive thing我想创建搜索引擎依赖于值用户输入并从数组值中获取所有单词用户输入的值 p>

例如我有这个数组： p>

  $ array = array（'it'，'pro'，  'gram'，'mer'，'programmer'）; 
 $ string =“itprogrammer”; 
  code>  pre> 
 
 抱歉坏语法。 如果有人可以帮助我，我很感激。 谢谢你的帮助。 p> 
  div>

答

You can use array_filter to filter out any values of the array which are not a substring of $string. Note I have used stripos for a case-insensitive search, if you want the search to be case-sensitive just use strpos instead.

$array = array('pro', 'gram', 'merit', 'program', 'it', 'programmer'); 
$string = "programit";
print_r(array_filter($array, function ($v) use($string) { return stripos($string, $v) !== false; }));

Output:

array
(
    [0] => pro
    [1] => gram
    [3] => program
    [4] => it
)

Update

Here is a recursive function which gives the same result.

function find_words($string, $array) {
    if (count($array) == 0) return $array;
    if (stripos($string, $array[0]) !== false)
        return array_merge(array($array[0]), find_words($string, array_slice($array, 1)));
    else
        return find_words($string, array_slice($array, 1));
}

Demo of both methods on rextester

以递归方式搜索数组值中的字符串值？

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