Create Associative Array inside a for loop

Question

Hi I've created an array with a for loop inside. The array doesn't have any data inside it until it reaches the for loop. I wanted to add an associative array to what I've done so far. For example my array currently ouputs

[0] => Array
        (
            [0] => Version 5
            [1] => Feb-16
            [2] => gary
            [3] => 80
            [4] => P
        )

I would like it to have headings instead of numbers

[0] => Array
        (
            Version => Version 5
            Date => Feb-16
            Name => gary
            RandNum => 80
            Letter => P
        }

I'm not sure how i'd fit into my loop and how I could if my different columns these headings. Below is my current code. Which outputs the array at the top.

 for($i = 0; $i <= 3; $i++){

      for($j = 0; $j <= 4; $j++){

           if ($j == 0){
                $times_table[$i][$j]=  "Version 5" ;
           }
           else if ($j == 1){
                $cur_date = date("M-y", $currentdate);

                $currentdate = strtotime('+1 month', $currentdate);

                $times_table[$i][$j]= "<strong>" . $cur_date . "</strong>" ;
           }
           else{
                    $times_table[$i][$j]=  "gary" ;
           }
           if ($j == 3) {
                    $numbers = mt_rand(1, 100);
                    $times_table[$i][$j]= $numbers ;

           }
           if ($j == 4){

                    if($i == 0 || $i == 3)
                    {
                        $pay = "P";

                         $times_table[$i][$j]= $pay ;
                    }
                    else{
                        $int = "I";

                         $times_table[$i][$j]= $int ;
                    }
           }

      }

 }

Can you describe the final output of your multidimensionnal array that you wish for ? — jiboulex
– jiboulex, Commented Dec 10, 2015 at 12:34
@jiboulex I think they want "headings instead of numbers" which they have included the proposed output. — Jamie Harding
– Jamie Harding, Commented Dec 10, 2015 at 12:37

Amit Rajput · Accepted Answer · 2015-12-10 12:38:27Z

1

Try this..

for($i = 0; $i <= 3; $i++){

             for($j = 0; $j <= 4; $j++){

               if ($j == 0){

                $times_table[$i]['Version']=  "Version 5" ;
            }
                else if ($j == 1){
                $cur_date = date("M-y", $currentdate);

                $currentdate = strtotime('+1 month', $currentdate);

                $times_table[$i]['Date']= "<strong>" . $cur_date . "</strong>" ;


                }
                else{
                    $times_table[$i]['Name']=  "gary" ;
                }
                if ($j == 3) {
                    $numbers = mt_rand(1, 100);
                    $times_table[$i]['RandNum']= $numbers ;

                }
                if ($j == 4){

                    if($i == 0 || $i == 3)
                    {
                        $pay = "P";

                    $times_table[$i]['Letter']= $pay ;
                    }
                    else{
                        $int = "I";

                    $times_table[$i]['Letter']= $int ;

                    }
                }

            }

            }

Hope this will solve your problem.

answered Dec 10, 2015 at 12:38

Amit Rajput

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1 Comment

Jamie Harding Over a year ago

Damn, you beat me to it. touché

jiboulex · Accepted Answer · 2015-12-10 12:48:24Z

1

In my opinion, your second for loop is not needed. You should know that you can create associative arrays like this :

<?php
$times_table = [];
$times_tables[] = [
    'Version' => 'Version 5',
    'Date' => 'Feb-16',
    'Name' => 'gary',
    'RandNum' => '80',
    'Letter' => 'P',
];

To match with your code :

<?php
$times_table = [];
for($i = 0; $i <= 3; $i++){
    $times_table[$i]['Version']=  "Version 5" ;
    $cur_date = date("M-y", $currentdate);
    $currentdate = strtotime('+1 month', $currentdate);
    $times_table[$i]['Date']= "<strong>" . $cur_date . "</strong>" ;
    $times_table[$i]['Name']=  "gary" ;
    $numbers = mt_rand(1, 100);
    $times_table[$i]['RandNum']= $numbers ;
    switch ($i) {
        case 0:
        case 3:
            $letter = 'P';
        break;
        default:
            $letter = 'I';
    }
    $times_table[$i]['Letter']= $letter;
}

I think this should do what you want in a cleaner way !

edited Dec 10, 2015 at 12:48

answered Dec 10, 2015 at 12:43

jiboulex

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2 Comments

user3660857 Over a year ago

Thanks for your reply. Could I ask why the keys aren't in the first array. And why create the second array $times_tables

jiboulex Over a year ago

there is one and only array : $times_table, which is multidimensional

Jamie Harding · Accepted Answer · 2015-12-10 12:39:29Z

for($i = 0; $i <= 3; $i++){

             for($j = 0; $j <= 4; $j++){

               if ($j == 0){

                $times_table["Version"][$j]=  "Version 5" ;
            }
                else if ($j == 1){
                $cur_date = date("M-y", $currentdate);

                $currentdate = strtotime('+1 month', $currentdate);

                $times_table["Date"][$j]= "<strong>" . $cur_date . "</strong>" ;


                }
                else{
                    $times_table["Name"][$j]=  "gary" ;
                }
                if ($j == 3) {
                    $numbers = mt_rand(1, 100);
                    $times_table["RandNum"][$j]= $numbers ;

                }
                if ($j == 4){

                    if($i == 0 || $i == 3)
                    {
                        $pay = "P";

                    $times_table["Letter"][$j]= $pay ;
                    }
                    else{
                        $int = "I";

                    $times_table["Letter"][$j]= $int ;

                    }
                }

            }

            }

Mi-Creativity · Accepted Answer · 2015-12-17 03:06:11Z

-1

You can create associative array like this:

$a=array("Version"=> "Version 5",
         "Date"=> "Feb-16",
         "Name" => "gary",
         "RandNum" => 80,
         "Letter" => "P"
        )

To access this array in for loop use $a['key']. For eg. to access version5, use $a['version'], to access Feb-16 use $a['Date'].

edited Dec 17, 2015 at 3:06

Mi-Creativity

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answered Dec 10, 2015 at 12:40

Rohit Malhotra

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