php - Compare the values of two arrays how has the same key and length -

i want compare values of 2 arrays have same key (the activity) , have same length.

arrays

$anna_array = array("soccer" => "10", "basketball" => "20", "atletics" => "40"); $john_array = array("soccer" => "15", "basketball" => "15", "atletics" => "45"); 

i want have like:

<?php if ($anna_array['soccer'] > $john_array['soccer']){     $points = "1"; } else {     $points = "0"; } ?> 

then use $points in results:

<?php foreach ($anna_array $x => $x_value) { $speler1_prestaties = "<span class=\"white bold\">".str_pad($count1++, 2, "0", str_pad_left)."</span> ".$x.":  <span class=\"orange\">".$x_value." "(".$points .")></span><br />";      echo $player1_info; ?> 

any appreciated.

first, can retrieve common keys first applying array_intersect_key , array_keys.

$common_sports = array_keys(array_intersect_key($anna_array, $john_array)); 

then can use array_fill_keys fill array same keys find above

$points_anna_array = $points_john_array = array_fill_keys($common_sports, 0); 

the array here generated is:

 array(3) {   ["soccer"]=>   int(0)   ["basketball"]=>   int(0)   ["atletics"]=>   int(0) } 

now can compare activity of anna , john

foreach ($common_sports $common_sport) {     if ($anna_array[$common_sport] > $john_array[$common_sport]) {         $points_anna_array[$common_sport]++;     } else if ($anna_array[$common_sport] < $john_array[$common_sport]) {         $points_john_array[$common_sport]++;     } } 

at point $points_anna_array's value this:

array(3) {   ["soccer"]=>   int(0)   ["basketball"]=>   int(1)   ["atletics"]=>   int(0) } 

and $points_john_array value:

array(3) {   ["soccer"]=>   int(1)   ["basketball"]=>   int(0)   ["atletics"]=>   int(1) } 

so:

foreach ($common_sports $common_sport) {     echo sprintf(        'anna(%s) %d vs john(%s) %d'."\n",        $common_sport, $points_anna_array[$common_sport],        $common_sport, $points_john_array[$common_sport]     ); } 

this output:

anna(soccer) 0 vs john(soccer) 1 anna(basketball) 1 vs john(basketball) 0 anna(atletics) 0 vs john(atletics) 1 

demo.

to total score, can use array_sum.

echo "john's total score: ", array_sum($points_john_array); echo "anna's total score: ", array_sum($points_anna_array);