Need help in exploding multiple arrays and then use foreach to return data

Question

Here are my variables

<?php
    $submenu = array( array("submenu1", "submenu2", "submenu3", "submenu4"),
           array("submenuA", "submenuB", "submenuC", "submenuD"),
           array("submenuI", "submenuII", "submenuIII", "submenuIV")
    );

    $mainmenu="Main1, Main2, Main3";
?>

The desired output should be:

Main1
 submenu1
 submenu2
 submenu3
 submenu4

Main2
 submenuA
 submenuB
 submenuC
 submenuD

Main3
 submenuI
 submenuII
 submenuIII
 submenuIV

Thanks!

What you have tried..??

GautamD31
– GautamD31

2013-03-15 04:30:45 +00:00
Commented Mar 15, 2013 at 4:30 — GautamD31
– GautamD31, Commented Mar 15, 2013 at 4:30

Rohan Kumar · Accepted Answer · 2013-03-15 05:13:24Z

1

Try this:

<?php
    $submenu = array( array("submenu1", "submenu2", "submenu3", "submenu4"),
        array("submenuA", "submenuB", "submenuC", "submenuD"),
        array("submenuI", "submenuII", "submenuIII", "submenuIV")
    );
    $mainmenu="Main1, Main2, Main3";
    $mainArr=explode(',',$mainmenu);
    $newArr=array_combine($mainArr,$submenu);
    print_r($newArr);   
?>

You can test it on http://writecodeonline.com/php/

Output:

Array ( [Main1] => Array ( [0] => submenu1 [1] => submenu2 [2] => submenu3 [3] => submenu4 ) 
[ Main2] => Array ( [0] => submenuA [1] => submenuB [2] => submenuC [3] => submenuD ) 
[ Main3] => Array ( [0] => submenuI [1] => submenuII [2] => submenuIII [3] => submenuIV ) )

edited Mar 15, 2013 at 5:13

answered Mar 15, 2013 at 4:34

Rohan Kumar

40.7k11 gold badges81 silver badges111 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Ultimater Over a year ago

Should be exploding on ', ' to get rid of the leading space. Also much easier to use array_combine.

Ultimater · Accepted Answer · 2013-03-15 04:49:12Z

Try this:

<?php
    $submenu = array( array("submenu1", "submenu2", "submenu3", "submenu4"),
           array("submenuA", "submenuB", "submenuC", "submenuD"),
           array("submenuI", "submenuII", "submenuIII", "submenuIV")
         );

    $mainmenu="Main1, Main2, Main3";
    $mainmenu=explode(", ",$mainmenu);
    $tree=array_combine($mainmenu,$submenu);
    echo '<pre>';
    foreach($tree as $menuname=>$childArray)
    {
        echo "$menuname\n";
        foreach($childArray as $submenuname)
        {
            echo " $submenuname\n";
        }
    }
    echo '</pre>';
?>

Output:

<pre>Main1
 submenu1
 submenu2
 submenu3
 submenu4
Main2
 submenuA
 submenuB
 submenuC
 submenuD
Main3
 submenuI
 submenuII
 submenuIII
 submenuIV
</pre>

mavili · Accepted Answer · 2013-03-15 04:43:04Z

0

$submenu = array( array("submenu1", "submenu2", "submenu3", "submenu4"),
       array("submenuA", "submenuB", "submenuC", "submenuD"),
       array("submenuI", "submenuII", "submenuIII", "submenuIV")
     );

$mainmenu="Main1, Main2, Main3";

$main = explode(',', $mainmenu);

for($i=0; $i<count($main); $i++){
    for($j=0; $j<count($submenu); $j++){
        $array[$main[$i]][$j] = $submenu[$i][$j];
    }
}

$array now contains what you need.

answered Mar 15, 2013 at 4:43

mavili

3,4344 gold badges33 silver badges46 bronze badges

2 Comments

Ultimater Over a year ago

Not quite. The second mainmenu item will have leading space " Main2" and the third will be " Main3". Could have used $array=array_combine($main,$submenu); to accomplish the same thing instead of using two ugly-looking for-loops. Also isn't formatting $array to the original poster's desired output.

mavili Over a year ago

You're right about formatting the output to desired outcome, however the main thing here is to get them in the correct form and order. Otherwise who would want menus and submenus to be a string of characters?? Obviously it's there to show how it should be ordered (i.e. main menus followed by submenus each)

MatRt · Accepted Answer · 2013-03-15 05:30:03Z

0

You can try something like:

// Make your main menu an array
$mainMenuArray = preg_split("/, /", $mainmenu);

// Loop on the main menu
for($i = 0 ; $i < count($mainMenuArray) ; $i++)
{
    // print main menu entry
    echo $mainMenyArray[$i];

    // Print all sub menu linked to the current main menu entry
    foreach($submenu[$i] as $subMenuEntry)
        echo $subMenuEntry;

    echo "\n";
}

edited Mar 15, 2013 at 5:30

answered Mar 15, 2013 at 4:35

MatRt

3,5441 gold badge22 silver badges15 bronze badges

1 Comment

Ultimater Over a year ago

$mainMenyArray = preg_split("/, /", $mainmenu); should be: $mainMenuArray = preg_split("/, /", $mainmenu); you spelled it wrong. Also echo $mainMenyArray; should be echo $mainMenuArray[$i]; Next time test your code.

Collectives™ on Stack Overflow

Need help in exploding multiple arrays and then use foreach to return data

4 Answers 4

1 Comment

Comments

2 Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

1 Comment

Comments

2 Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related