array-intersect

Is there a built-in function to get all members of array 1 which do not exist in array 2? I know how to do it programatically, only wondering if there is a built-in function that does the same. So please, no code examples. That sounds like a job for array_diff . Returns an array containing all the entries from array1 that are not present in any of the other arrays. Dallas Caley array_diff is definitely the obvious choice but it is not technically the opposite of array interesect. Take this example: $arr1 = array('rabbit','cat','dog'); $arr2 = array('cat','dog','bird'); print_r( array_diff(

I am trying to find the intersection values between multiple arrays. for example code1 = [1,2,3] code2 = [2,3,4] code3 = [0,2,6] So the result would be 2 I know in PHP you can do this with array_intersect I wanted to be able to easily add additional array so I don't really want to use multiple loops Any ideas ? Thanks, Alex Anurag Use the & method of Array which is for set intersection. For example: > [1,2,3] & [2,3,4] & [0,2,6] => [2] If you want a simpler way to do this with an array of arrays of unknown length, you can use inject. > arrays = [code1,code2,code3] > arrays.inject(:&) # Ruby 1

I'm trying to use array_intersect to compare two arrays of arrays. $start[]=array( 'id'=>1, 'name'=>'Up', 'action'=>'up' ); $start[]=array( 'id'=>3, 'name'=>'Down', 'action'=>'down' ); $start[]=array( 'id'=>5, 'name'=>'Left', 'action'=>'left' ); $end[]=array( 'id'=>1, 'name'=>'Up', 'action'=>'up' ); $end[]=array( 'id'=>9, 'name'=>'Up', 'action'=>'up' ); $result=array_intersect($start,$end); However, I always get the notice message: Notice: Array to string conversion in testfile.php on line xyz And the comparison doesn't actually occur. What is the best way to compare the two arrays without

i have an multidimensioanl array which can increase based on user input.i want to do array_intersect inside the array to get the common values between the key. like example Array ( [php] => Array ( [0] => 36 [1] => 51 [2] => 116 [3] => 171 [4] => 215 [5] => 219 [6] => 229 [7] => 247 [8] => 316 ) [java] => Array ( [0] => 14 [1] => 16 [2] => 19 [3] => 24 [4] => 25 [5] => 26 [6] => 29 [7] => 31 [8] => 33 [9] => 34 [10] => 35 [11] => 36 [12] => 37 [13] => 40 [14] => 45 [15] => 49 [16] => 51 ) ) expected output should be like (36,51) and this is i am able to get it via this, $intersected_array =

I have two arrays: $arr1 = array(101 => 250, 102 => 250, 103 => 250, 104 => 500, 105 => 500, 106 => 500,); and $arr2 = array(0 => 103, 1 => 104, 2 => 105) The result I want to get is Array (103 => 250, 104 => 500) I have tried working with array_intersect(array_flip($arr1), $arr2); but array_flip($arr1) gives something like Array(103 => 250, 106 => 500) thus, keys get lost and can not be intersected correctly. Is there a way to get the desired result? The following code does the job. I hope it is self-explanatory. array_unique(array_intersect_key($arr1, array_flip($arr2))) Using the standard

I am creating a faceted search, and I'm am trying to use array_intersect to compare the arrays and find the inputs that match. The problem is that I will have a variable amount of arrays at anytime depending on what filters the user has selected: $array_1, $array_2, $array_3 etc... How do I create an array_intersect function that is dynamic in this sense? This is what I've tried: $next_array = 0; for($i = 0; $i < $array_count; $i++) { $next_array++; if ($i == 0) { $full_array = ${array_.$i}; } else { if(!empty(${cvp_array.$next_array})) { $full_array = array_intersect($full_array, ${cvp_array_