PHP Sort Multi Dimension array

[dirtbikerxz]

I have a multidimensional array like so:

events[0][0] = txho

events[0][1] =  2016-04-27

events[0][2] = CMP

 

events[1][0] = ONTA

events[1][1] =  2016-04-12

events[1][2] = CMP1

 

events[2][0] = LAKE

events[2][1] =  2016-07-13

events[2][2] = MER

 

how do I get php to sort the array using the date portion of each array essentially (events[x][1])

so that the array becomes

 

events[0][0] = ONTA

...etc (remaining two fields)

 

events[1][0] = txho

...etc (remaining two fields)

events[2][0] = LAKE

...etc (remaining two fields)

 

thanks in advance

[fizzlesticks]

Use usort

The first parameter is the array and the second parameter is a function that takes 2 arguments which are the 2 values being compared (arrays in your case.)

The function needs to return 0 if 2 objects are equal, 1 if the first parameter is greater and -1 if the first parameter is less. If you're using PHP 7 the function will look something like:

usort($your_array, function($a, $b) { return $a[1] <=> $b[1]; });