echo a multidimensional array in php with variables

Question

I am trying to get the data from a multidimensional array key in php. The array structure is like this :

Array


( [status] => 1     [embeds] => Array
    (
        [1] => Array
            (
                [embed] => <IFRAME SRC="XXXXXXXX.ZZZ" FRAMEBORDER="0" MARGINWIDTH="0" MARGINHEIGHT="0" SCROLLING="NO" WIDTH="620" HEIGHT="360"></IFRAME>
                [link] => http://XXXXXXXXXXX.ZZZZ
                [language] => ENG
            )

        [2] => Array
            (
                [embed] => <iframe src="http://www.XXXXXXX.ZZZZ" width="620" height="360" frameborder="0" scrolling="no"></iframe>
                [link] => http://www.XXXXXXX.ZZZZZ
                [language] => ENG
            ) ... ... ... ...


    ))

The $auto_incrementing_value starts from 1 to as many as there are. so if I want to echo only 1 data and $auto_incrementing_value = 1, I can do echo $ret['embeds'][$auto_incrementing_value]['link']; What I want to do is echo all the "link" value from all the arrays.

I tried this code but it does not work :

$codes = 1;
foreach ($ret as $key => $rets){
echo $ret['embeds'][$codes]['link'];
$codes++;
}

Sammitch · Accepted Answer · 2013-08-19 18:06:17Z

1

That sure is some whacky syntax you've got going on there. You're using a foreach loop like a while loop that is written like a for loop.

Try:

foreach ($ret['embeds'] as $embed){
  echo $embed['link'];
}

Or:

for( $i=1; $i<=count($ret['embeds']); $i++ ) {
  echo $ret['embeds'][$i]['link'];
}

Or if you want to get saucy:

$i=0;
while($i<=count($ret['embeds'])) {
  echo $ret['embeds'][$i]['link'];
  $i++;
}

edit

@MarkBaker raises a valid point about calling count() [or really any function] in the loop condition. If the function's return will be static during the entire course of the loop [ie: the number of elements in the array doesn't change] then it's best to do:

$count = count($ret['embeds'];
for( $i=1; $i<=$count; $i++ ) {
  echo $ret['embeds'][$i]['link'];
}

Or, alternatively, you can go backwards:

for( $i=count($ret['embeds'])-1; $i>=0; $i-- ) {
  echo $ret['embeds'][$i]['link'];
}

edited Aug 19, 2013 at 18:06

answered Aug 17, 2013 at 0:24

Sammitch

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5 Comments

Barmar Over a year ago

Was going to add to my answer to show the for loop, but you beat me to it.

user2650060 Over a year ago

thank you! Your solution in working great too. But, witch one is better (speed, errors ...), the foreach loop or the for loop.

Sammitch Over a year ago

@user2650060 these loops are all more or less equivalent, the differences are all too small to worry about even if the loop runs a billion iterations.

Mark Baker Over a year ago

Any loop that executes count($ret['embeds']) every iteration isn't a well written loop because that is adding a performance overhead

Sammitch Over a year ago

@MarkBaker true. It's a lazy way to write a loop and should be avoided for arrays larger than what you can count without having to take off your shoes. But I'm super lazy.

ndm · Accepted Answer · 2013-08-17 00:22:44Z

1

You could simply iterate over the embeds array:

foreach($ret['embeds'] as $embed) {
    echo $embed['link'];
}

answered Aug 17, 2013 at 0:22

ndm

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1 Comment

user2650060 Over a year ago

thanks alot! It working! I was complicating things but the solution was simple!

Barmar · Accepted Answer · 2013-08-17 00:22:52Z

1

You don't need to use an index variable if you're using foreach, that's what foreach does automatically. You just have to give it the correct array that you want to iterate over.

foreach ($ret['embeds'] as $rets) {
    echo $rets['link'];
}

answered Aug 17, 2013 at 0:22

Barmar

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1 Comment

user2650060 Over a year ago

thank you! It working great . Also, thank you for explaining! I was complicating things too much!

Mark Baker · Accepted Answer · 2013-08-17 00:30:33Z

0

PHP >= 5.5.0

foreach(array_column($ret['embeds'], 'link') as $link) {
    echo $link, PHP_EOL;
}

just to demonstrate one of the newest features in PHP

answered Aug 17, 2013 at 0:30

Mark Baker

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