Php replaces the key value of an array with the rule of another array and obtains its value as a string.

Php replaces the key value of an array with the rule of another array and obtains the value to be converted into a string. now there are two arrays.

$ Arr1 = array ("q" => "1", "w" => "2", "e" => "3 "); $ arr2 = array ([0] => "You", [1] => "me", [2] => "him ");

Now I need to get an array like this

$ Arr = array ("q" => "You", "w" => "I", "e" => "He "); // then, you only need to get the value of this array and convert it into strings separated by commas $ str = 'You, me, him ';

Reply to discussion (solution)

$ Arr1 = array ("q" => "1", "w" => "2", "e" => "3 "); $ arr2 = array (0 => "You", 1 => "me", 2 => "He"); $ arr3 = array_combine (array_keys ($ arr1 ), $ arr2); print_r ($ arr3); echo join (',', $ arr3 );

Array ([q] => you [w] => I [e] => He) you, I, he

$ Arr1 = array ("q" => "1", "w" => "2", "e" => "3 "); $ arr2 = array (0 => "You", 1 => "me", 2 => "He"); $ arr3 = array_combine (array_keys ($ arr1 ), $ arr2); print_r ($ arr3); echo join (',', $ arr3 );

Array ([q] => you [w] => I [e] => He) you, I, he

Thank you, but I just tried it.
Let me give it to the instance.

Array ([0] => Array ([is_notice] => 5) [1] => Array ([is_notice] => 16 ))

This is an array of $ arr1, which is a parameter of the type. for example, the number 5, 16, ranging from 1 to 20, is read from the action database for initiating an application to cancel an application.
The number of records read based on the conditions may exceed 20, and there may be repeated records such as 5, 5, 6, 6, 10, and 10.

Then, $ arr2 indicates that the 20 types of Chinese descriptions from [0] to [19] are short words.

The message displayed to the user must be submitted by xxx in the following actions: initiate an application, reject the application, join, archive ,..... This way

Then, we tried echo join (',', $ arr3); value msgtype and the variable status = 1 to form a json string and return the following
{"Msgtype": null, "status": 1}

Print_r ($ arr3); null
Var_dump is bool (false)

$ Typearr = array (
[0] => "system Notification ",
[1] => "materials passed ",
[2] => "review failed ",
[3] => "Quota Update"
.....
);
This is the array of arr2. Please check if there are two arrays of arr1 arr2.

Array ([0] => Array ([is_notice] => 5) [1] => Array ([is_notice] => 16 ))
You are a two-dimensional array.

Array ([0] => Array ([is_notice] => 5) [1] => Array ([is_notice] => 16 ))
You are a two-dimensional array.

Ah, oh...
Reading only one field would also be an array
The is_notice field is read from the database.
How can I convert it
$ Arr1 = array (
"Is_notice" => "1 ",
"Is_notice" => "5 ",
"Is_notice" => "16"
);

Tutorial

Is that true?

$ Arr1 = array ('is _ notice '=> 3), array ('is _ notice' => 2 ), array ('is _ notice' => 1); $ arr2 = array (0 => 'system notification', 1 => 'material pass ', 2 => 'review failed', 3 => 'quota update'); $ arr3 = array (); foreach ($ arr1 as $ k => $ v) {$ arr3 [] ['is _ notice '] = $ arr2 [$ v ['is _ notice'];} print_r ($ arr3 );

Array
(
[0] => Array
(
[Is_notice] => quota update
)

[1] => Array
(
[Is_notice] => review failed
)

[2] => Array
(
[Is_notice] => material passed
)

)

Array ([0] => Array ([is_notice] => 5) [1] => Array ([is_notice] => 16 ))
You are a two-dimensional array.

Ah, oh...
Reading only one field would also be an array
The is_notice field is read from the database.
How can I convert it
$ Arr1 = array (
"Is_notice" => "1 ",
"Is_notice" => "5 ",
"Is_notice" => "16"
);

Tutorial

This is also a two-dimensional array.
In this way, you can
$ Arr3 [] = $ arr2 [$ v ['is _ notice '];

Thank you !!