Example explanation of simple word grouping algorithm implemented in PHP

This article mainly introduces the simple word grouping algorithm implemented by PHP, involving PHP's traversal, recursion, combination, operation and other related operating skills for strings. Friends in need can refer to the following

Examples of this article A simple word grouping algorithm implemented in PHP. Share it with everyone for your reference, the details are as follows:

<?php
//组词算法
function diyWords($arr,$m){
  $result = array();
  if ($m ==1){//只剩一个词时直接返回
    return $arr;
  }
  if ($m == count($arr)){
    $result[] = implode(&#39;&#39; , $arr);
    return $result;
  }
  $temp_firstelement = $arr[0];
  unset($arr[0]);
  $arr = array_values($arr);
  $temp_list1 = diyWords($arr, ($m-1));
  foreach ($temp_list1 as $s){
    $s = $temp_firstelement.$s;
    $result[] = $s;
  }
  $temp_list2 = diyWords($arr, $m);
  foreach ($temp_list2 as $s){
    $result[] = $s;
  }
  return $result;
}
//组词算法
$arr=array(&#39;裤子&#39;,&#39;牛仔&#39;,&#39;低腰&#39;,&#39;加肥&#39;);
$count=count($arr);
for($i=1;$i<=$count;$i++){
  $temp[$i]=diyWords($arr,$i);
}
echo &#39;<pre/>&#39;;print_r($temp);

Running results:

Array
(
[ 1] => Array
                                                                                                                                                                                                                         . Adding weight
)
[2] => Array
                                                                                                                                                                                                . & gt; pants plus fertilizer
[3] = & gt; denim low waist
[4] = & gt; cowboy plus fertilizer
[5] = & gt fertilizer
)
[ 3] => Array
                                                                                                                                                                                                            .
                                                                                                                                                                                                 . )
)




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