PHP merge two ordered arrays_PHP tutorial

For two ordered arrays, each array is looped once and can be arranged into a new array in an orderly manner;
Take the idea of ​​incrementing, comparing and then inserting in order, php code:
[php]
$arr1 = array(1,2,3,4,5,6,7,8);//Sample data
$arr2 = array(3,4,5,7,9,10);
echo '

'; 

print_r(mergeOrderly($arr1,$arr2));//Example 

function mergeOrderly($arr1,$arr2){ 

If(!count($arr1)){//Determine whether the parameters are meaningful 

        return false; 

}elseif(!count($arr2)){ 

        return false; 

}else {//Merge 

          $arr = array();//Define the final array container 

          $arr2Num = count($arr2);//Statistical array length 

          $arr1Num = count($arr1); 

          $i1 = 0;//Loop mark of array 1 

          $i2 = 0;//Loop mark of array 2 

​​​​while($i1 < $arr1Num || $i2 < $arr2Num){//Do you still need to merge? 

If($i1 < $arr1Num && $i2 < $arr2Num){//When neither array reaches the end, case 1 

If($arr1[$i1] > $arr2[$i2]){//Need to compare array 1 and array 2, put the smaller one into the target array, and mark +1 

                            $arr[] = $arr2[$i2]; 

                         $i2++; 

                                                                                                                                                                 
                          $arr[] = $arr1[$i1]; 

                         $i1++; 

                                                                                                                       
                  }elseif($i1 < $arr1Num && $i2 >= $arr2Num){//Array 2 has reached the end, but array 1 has not yet arrived, case two 

                                                                                                                                                                                                                                          $arr[] = $arr1[$i1];//Directly insert the contents of array 1 into the target array 

                         $i1++; 

                  }elseif($i2 < $arr2Num && $i1 >= $arr1Num){//Array 1 has reached the end, but array 2 has not yet arrived, case three 

                                 $arr[] = $arr2[$i2];//Insert the contents of array 2 directly into the target array 

                         $i2++; 

                                                                                                                                     
         } 

         return $arr; 

}  

} 

?> 



Author: dats0407 



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www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/478058.htmlTechArticleFor two ordered arrays, each array is looped once to arrange them into new ones in order Inside the array; take the idea of ​​incrementing, comparing, and then inserting in order, php code: [php] ?p...