sort an array by key php code example

Example 1: php sort array by key

$weight = [
    'Pete' => 75, 
    'Benjamin' => 89,
    'Jonathan' => 101
  ];  	
  ksort($weight);

Example 2: php sort array by specific key

usort($array, function ($a, $b) {
  return ($a['specific_key'] < $b['specific_key']) ? -1 : 1;
});

Example 3: php array sort by key value

To PHP sort array by key, you should use: 
	ksort() (for ascending order) or krsort() (for descending order). 
      
To PHP sort array by value, you will need functions:
	asort() and arsort() (for ascending and descending orders).

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