通过子数组中的值对数组进行排序[重复]

Question

This question already has an answer here:

• How can I sort arrays and data in PHP? 10 answers

I have an array with lots of elements like this:

$items[] = array($url, $pic, $price);

I need $items to be sorted after $price ascending. Is there a good function to do this?

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Answer 1

  function cmp($a, $b)
  {
     return $b[2] - $a[2];
  }

     usort($item, "cmp")