Push to array with key based on value

Question

I have a multidimensional array and then another array where the structure is similar but not identical (it shares common keys).

It looks something like this:

[my_Array] => Array
    (
        [0] => Array
            (
                [title] => o1
                [item_details] => original item 1 
                [booking_date] => 2015-02-14
                [booking_start] => 18:30:00
                [booking_end] => 18:35:00
            )
        [1] => Array
            (
                [title] => o2
                [item_details] => original item 2
                [booking_date] => 2015-02-14
                [booking_start] => 19:30:00
                [booking_end] => 19:35:00
            )
    )


[new_array] => Array
    (
        [item_details] => new item 
        [booking_date] => 2015-02-14
        [booking_start] => 18:55:00
    )

The first array is already ordered on the booking_start key, but I want to push the new array item to the first array in order of booking_start.

I'm guessing that array splice is my friend here but how work out what position I need to push to?

So my result would look like this:

[my_Array] => Array
    (
        [0] => Array
            (
                [title] => o1
                [item_details] => original item 1 
                [booking_date] => 2015-02-14
                [booking_start] => 18:30:00
                [booking_end] => 18:35:00
            )
        [1] => Array
            (
                [item_details] => new item 
                [booking_date] => 2015-02-14
                [booking_start] => 18:55:00
            )
        [2] => Array
            (
                [title] => o2
                [item_details] => original item 2 
                [booking_date] => 2015-02-14
                [booking_start] => 19:30:00
                [booking_end] => 19:35:00
            )
    )

@Tom Do you want to push the new item array in order of booking_start so that in your case thew new array comes on 1st index of existing array. — dev_khan
– dev_khan, Commented Feb 11, 2015 at 11:18
Why array_splice? Why not just push and reorder with usort? — Robo Robok
– Robo Robok, Commented Feb 11, 2015 at 11:24
Just an observation: var_export far better than print_r for example data, because with the ouput of var_export: copy&paste, 3 lines of code showing what you want to know, done. With print_r: hm, do I re-format the data for that little question ...nope, next question.... — VolkerK
– VolkerK, Commented Feb 11, 2015 at 11:41

Balaji · Accepted Answer · 2015-02-11 11:43:13Z

1

First push new_array into my_array and use usort

 array_push($my_Array, $new_arr);
 usort($my_Array, function($a, $b) {
   return $a['booking_start'] - $b['booking_start'];
 });

answered Feb 11, 2015 at 11:43

Balaji

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1 Comment

Tom Over a year ago

had to convert the time to seconds but this got me there... thanks

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