for loop counter gives error for array index [duplicate]

Since everyone given alternatives, here's a solution to the problem at-hand. Sometimes we have to work with the data we have, not re-arrange it the way we like it. That being said, this will remove all sub-sequent entries from the array that are duplicates.

$array = Array( Array( 'name' => 'Test 3', 'slug' => 'test-3' ), Array( 'name' => 'Foo', 'slug' => 'Bar' ), Array( 'name' => 'Foo', 'slug' => 'Bar' ), Array( 'name' => 'Test 1', 'slug' => 'test-1' ), Array( 'name' => 'Test 2', 'slug' => 'test-2' ), Array( 'name' => 'Test 3', 'slug' => 'test-3' ), ); var_dump($array); for ($e = 0; $e < count($array); $e++) { $duplicate = null; for ($ee = $e+1; $ee < count($array); $ee++) { if (strcmp($array[$ee]['name'],$array[$e]['name']) === 0) { $duplicate = $ee; break; } } if (!is_null($duplicate)) array_splice($array,$duplicate,1); } var_dump($array);

Which will look like this:

array(6) { [0]=> array(2) { ["name"]=> string(6) "Test 3" ["slug"]=> string(6) "test-3" } [1]=> array(2) { ["name"]=> string(3) "Foo" ["slug"]=> string(3) "Bar" } [2]=> array(2) { ["name"]=> string(3) "Foo" ["slug"]=> string(3) "Bar" } [3]=> array(2) { ["name"]=> string(6) "Test 1" ["slug"]=> string(6) "test-1" } [4]=> array(2) { ["name"]=> string(6) "Test 2" ["slug"]=> string(6) "test-2" } [5]=> array(2) { ["name"]=> string(6) "Test 3" ["slug"]=> string(6) "test-3" } } array(4) { [0]=> array(2) { ["name"]=> string(6) "Test 3" ["slug"]=> string(6) "test-3" } [1]=> array(2) { ["name"]=> string(3) "Foo" ["slug"]=> string(3) "Bar" } [2]=> array(2) { ["name"]=> string(6) "Test 1" ["slug"]=> string(6) "test-1" } [3]=> array(2) { ["name"]=> string(6) "Test 2" ["slug"]=> string(6) "test-2" } }