sort array of objects by two fields in php

Question

i have an array of objects like this : http://pastebin.ca/3217309
i want to sort this array to objects with come first then others sort by date
currently I'm using this to sort array

function cmp($a, $b)
                   {
                       return strcmp($a->date, $b->date);
                   }

                   usort($data, "cmp");

and works good but it only sort array by date and i want to in ordered array objects with pin=1 come first then other objects come after pins. i hope my question is clear,sorry for bad english !

Philipp · Accepted Answer · 2015-10-25 11:00:26Z

1

If you want to sort after an other criteria, you should just add the condition to your sort function:

if ($a->pin != $b->pin) return $a->pin == 1 ? -1 : 1;

this condition only applies for $items with unequal pin properties. Combine your old compare function with this one would result in the following

function cmp($a, $b) {
    if ($a->pin != $b->pin) return $a->pin == 1 ? -1 : 1;
    return strcmp($a->date, $b->date);
}

answered Oct 25, 2015 at 11:00

Philipp

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2 Comments

Mr.5hady Over a year ago

thanks you so much , another question can i add sort direction to it ? something like we do in mysql query : ORDER BY date DESC ?

Mr.5hady Over a year ago

sorry found the answer my self by switching strcmp($a->date, $b->date) with strcmp($b->date, $a->date)

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