PHP foreach loop through multidimensional array

Question

I have an array:

$arr_nav = array( array( "id" => "apple", 
          "url" => "apple.html",
          "name" => "My Apple" 
        ),
        array( "id" => "orange", 
          "url" => "orange/oranges.html",
          "name" => "View All Oranges",
        ),
        array( "id" => "pear", 
          "url" => "pear.html",
          "name" => "A Pear"
        )       
 );

Which I would like to use a foreach loop to replace (which only allows me to set the number:

for ($row = 0; $row < 5; $row++)

with the ability to display a .first and .last class for the relevant array values

Edit

I would like the data to be echoed as:

<li id="' . $arr_nav[$row]["id"] . '"><a href="' . $v_url_root . $arr_nav[$row]["url"] . '" title="' . $arr_nav[$row]["name"] . '">"' . $arr_nav[$row]["name"] . '</a></li>' . "\r\n";

Many thanks for your quick responses. StackOverflow rocks!

score 41 · Accepted Answer · edited May 20 '15 at 15:54

41

$last = count($arr_nav) - 1;

foreach ($arr_nav as $i => $row)
{
    $isFirst = ($i == 0);
    $isLast = ($i == $last);

    echo ... $row['name'] ... $row['url'] ...;
}

edited May 20 '15 at 15:54

sarah.ferguson

3,167
2
23
31

answered May 09 '09 at 08:54

Greg

316,276
54
369
333

Many thanks! I used: (($isLast) ? ' class="last-child"' : '') to add a class to the list-item – May 09 '09 at 09:09

score 5 · Answer 2 · answered Apr 04 '13 at 18:44

5

<?php
$php_multi_array = array("lang"=>"PHP", "type"=>array("c_type"=>"MULTI", "p_type"=>"ARRAY"));

//Iterate through an array declared above

foreach($php_multi_array as $key => $value)
{
    if (!is_array($value))
    {
        echo $key ." => ". $value ."\r\n" ;
    }
    else
    {
       echo $key ." => array( \r\n";

       foreach ($value as $key2 => $value2)
       {
           echo "\t". $key2 ." => ". $value2 ."\r\n";
       }

       echo ")";
    }
}
?>

OUTPUT:

lang => PHP
type => array( 
    c_type => MULTI
    p_type => ARRAY
)

Reference Source Code

answered Apr 04 '13 at 18:44

Hassan Amir Khan

645
8
13

only 1 level..we need more multi dimensional – aswzen Dec 05 '16 at 11:26
@aswzen you can use recursion like this http://stackoverflow.com/questions/14006609/php-recursion-print-all-elements-of-a-multidimensional-array-with-keys#answer-14006639 – Hassan Amir Khan Dec 05 '16 at 15:26

score 2 · Answer 3 · answered May 09 '09 at 08:40

2

If you mean the first and last entry of the array when talking about a.first and a.last, it goes like this:

foreach ($arr_nav as $inner_array) {
    echo reset($inner_array); //apple, orange, pear
    echo end($inner_array); //My Apple, View All Oranges, A Pear
}

arrays in PHP have an internal pointer which you can manipulate with reset, next, end. Retrieving keys/values works with key and current, but using each might be better in many cases..

answered May 09 '09 at 08:40

soulmerge

73,842
19
118
155

Apologies for being a little unclear. I would like the values to be shown as:
' . $arr_nav[$row]["name"] . '

May 09 '09 at 08:45

this should be the accepted answer. lot of creativity.!! – Rotimi Apr 10 '17 at 08:07

score 0 · Answer 4 · answered May 09 '09 at 09:10

<?php
$first = reset($arr_nav); // Get the first element
$last  = end($arr_nav);   // Get the last element
// Ensure that we have a first element and that it's an array
if(is_array($first)) { 
   $first['class'] = 'first';
}
// Ensure we have a last element and that it differs from the first
if(is_array($last) && $last !== $first) {
   $last['class'] = 'last';
}

Now you could just echo the class inside you html-generator. Would probably need some kind of check to ensure that the class is set, or provide a default empty class to the array.

PHP foreach loop through multidimensional array

4 Answers4

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