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Re-Ordering Elements Of Arrays


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I have this multidimensional array that I'll call "$Items_Array":

 

array (size=3)
 0 => 
   array (size=3)
     'id' => string '1' (length=1)
     'quantity' => int 1
     'name' => string 'Book' (length=1)
 1 => 
   array (size=3)
     'id' => string '2' (length=1)
     'quantity' => int 5
     'name' => string 'Shirt' (length=29)
 2 => 
   array (size=3)
     'id' => string '3' (length=1)
     'quantity' => int 2
     'name' => string 'Ice-cream' (length=22)

 

I want to re-arrange the order of elements, according to "quantity", so that the one with the largest quantity comes first. The desired result would look like this:

 

array (size=3)
 0 => 
   array (size=3)
     'id' => string '2' (length=1)
     'quantity' => int 5
     'name' => string 'Shirt' (length=29)
 1 => 
   array (size=3)
     'id' => string '3' (length=1)
     'quantity' => int 2
     'name' => string 'Ice-cream' (length=22)
 2 => 
   array (size=3)
     'id' => string '1' (length=1)
     'quantity' => int 1
     'name' => string 'Book' (length=1)

 

Can someone show me how to do this? Is it just an easy PHP command?

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