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        用数字对替换字符串中的数字求和

        sum numbers in a replaced string by numbers(用数字对替换字符串中的数字求和)

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                  本文介绍了用数字对替换字符串中的数字求和的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  假设我有这两个数组

                     $letters = array('a','b','c', 'd', 'e');
                     $replace = array( 1,  5,  10, 15 , 20);
                     $text = "abd cde dee ae d" ;
                     $re = str_replace($letters, $replace, $text) ;
                     echo $re ;  //this output:
                  
                       1515 101520 152020 120 15 
                  

                  现在我想将每个单词的上述数字相加,结果应该是这样的:

                  Now i want sum the above numbers for each word and the result should be like that:

                       21 45 55 21 15
                  

                  我尝试的是:

                      $resultArray = explode(" ", $re); 
                  
                      echo array_sum($resultArray).'<br />' ; // but it output wrong result. 
                                                             // it output this : 255190
                  

                  我怎样才能做到这一点?

                  how can i achieve this ?

                  非常感谢任何帮助.

                  像这样的阿拉伯字母

                     $letters = array('', '','','' ) ;
                     $replace = array(1, 5, 10, 15 ) ;
                     $text = "  "; 
                  

                  推荐答案

                  将字符串转换为数组并使用 array_sum.

                  Convert the string into an array and use array_sum.

                  array_sum(explode(' ', $re));
                  

                  编辑

                  对不起,误会了:

                  $letters = array('a','b','c', 'd', 'e');
                  
                  $replace = array( 1,  5,  10, 15 , 20);
                  
                  $text = "abd cde dee ae d" ;
                  
                  $new_array = explode(' ', $text);
                  
                  $sum_array = array();
                  
                  foreach ($new_array as $string)
                  {
                  
                    $nums = str_split($string);
                  
                    foreach ($nums as &$num)
                    {
                      $num = str_replace($letters, $replace, $num);
                    }
                  
                    $sum_array[] = array_sum($nums);
                  
                  }
                  
                  echo implode(' ', $sum_array);
                  

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