Question

Does next() and prev() work on associative arrays?

I’m trying to traverse through a dataset that uses two records to describe one “game” if you will. So when I’m on the second record w/ matching id i need to look at the record before and grab eg_item['final_score'].

{"id":"75", "team_name":"TEAM1", "home_team_name":"TEAM1", "image":"TEAM1_HOME.png", "final_score":"37"}, 
{"id":"75", "team_name":"TEAM2", "home_team_name":"TEAM2", "image":"TEAM2_AWAY.png", "final_score":"10"}, 
{"id":"76", "team_name":"TEAM1", "home_team_name":"TEAM1", "image":"TEAM1_HOME.png", "final_score":"10"}, 
{"id":"76", "team_name":"TEAM2", "home_team_name":"TEAM2", "image":"TEAM2_AWAY.png", "final_score":"14"},

All of the examples I’m finding use lame array('one','two',three') type examples that just don’t help.

code sample:

foreach( $json_output as $eg_item ) :

    if( $this_game_id == $last_game_id ) :
        // get this records info
        $b_score = $eg_item['final_score'];
        $b_team_name = $eg_item['team_name'];
        prev( $json_output );
            // get previous records info
        $a_score = $eg_item['final_score'];
        $a_team_name = $eg_item['team_name'];
        $a_game_id = $eg_item['id'];
        // put pointer back
        next( $json_output );    
    else :  
        // skip next record     
    endif;

endforeach;

Answer 1

That looks like an array of associative arrays, right? If so, loop through them by index 2 at a time, then you can look at the current inner array and the previous inner array in each iteration of the loop:

for ($i = 1; $i < count($array); $i+= 2) {
  $current = $array[$i];
  $last = $array[$i-1];
  //$current['final_score'], $last['final_score'], etc
}