2 Ways to merge PHP two-dimensional arrays _php tutorial

Yesterday also wrote a technical article on the integration of arrays, where I introduced a one-dimensional array merge, here to introduce the PHP two-dimensional arrays of the merger method, I hope that the students will help you oh.

Example 1

Custom Method Merging arrays

Let's look at a two-dimensional array:

code as follows

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"!--? php array ( [0] => ; Array ( [a] = store_name [B] = = store one ) [1] = = Array ( [A] = store_owner [b] = small wind ) [2] = = Array ( [A] = store_name [b] + shop two ) [3] = > Array ( [A] + store_owner [B] = = Small lei ) ; You'll find two store_name and Store_own. Er, so I want them to be merged into the following !--? php Array ( [0] = + Array ( [A] = shop one [B ] = Small wind ) [1] = + Array ( [A] + shop two [B] = = Small lei ) ;

The merge method is as follows:

The code is as follows

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$stores = Array (); Define an empty array $store _count=count ($showinfo); Statistics show the number of times, here the $showinfo is I get the database content of a variable, and then print out is just the beginning of the appearance for ($i =0; $i < $store _count; $i + +) { $j = $i +1; The $i plus 1 skips a level equivalent to $j obtained is a value with an odd key value $stores []=array ( ' Name ' = $showinfo [$i] [' value '], ' Owner ' = $showinfo [$j] [' value '], ); $i = $j; The effect here is equivalent to $i get a value with an even number of keys } ?>

This will give you the results above!

To make it clearer, I wrote out the database table structure, the main fields are as follows:

Key value

Store_name Shop One

Store_owner Small Wind

Store_name Shop II

Store_owner Small Lei

Through the above method, the front page can be displayed in a row, as follows

Name owner

Shop a Little Wind

Shop two small Lei

Example 3

The code is as follows

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$arr = array ( 0 = Array ( ' 1@01,02 ', ' 2@01,02 ', ' 4@all ', ' 3@01 ', ' 5@01,02,04 ', ), 1 = Array ( ' 1@01,02,03 ', ' 2@01,02,04 ', ' 3@all ', ' 4@01,02 ', ' 111@01,05 ', ' 5@03 ', ), br> 2 = = Array ( ' 1@01,02,03 ', ' 2@02,03,05 ', ' 3@all ', ' 4@01,02,03 ', ' 111@01,05 ', ' 5@03 ', ) , ); $result = Array (); foreach ($arr as $items) { if (Is_array ($items)) { foreach ($items as $item) { $item = explode (' @ ', $item); if (count ($item)! = 2) { continue; } $result [$item [0]]. = $item [1]. ', '; } } } Function rejoin (& $item, $key, $seq) { $list = Array_unique (Explode ($seq, $item)); if (in_ Array (' All ', $list)) { $item = $key. ' @ALL '; }else{ $item = $key. ' @ '. Join ($seq, $list); } } Array_walk ($result, ' rejoin ', ', '); Sort ($result); Var_export ($result); /** * Array ( * 0 = ' 111@01,05, ', * 1 = ' 1@01,02,03, ', * 2 = ' 2@01,02,04,03,05, ', * 3 = ' 3@all ', * 4 = ' 4@all ', * 5 = ' 5@01,02,04,03, ', *) */ ;

http://www.bkjia.com/PHPjc/632666.html www.bkjia.com true http://www.bkjia.com/PHPjc/632666.html techarticle yesterday also wrote a technical article on the integration of arrays, where I introduced a one-dimensional array merge, here to introduce the PHP two-dimensional array of the merger method, I hope that the alumni have some help ...

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