How to grab the keys and value from an array in an array with php

Question

print_r($top5) gives me an array like this:

Array ( 
    [title1] => Array ( 
                [id_1] => 4 
                )
    [title2] => Array ( 
                [id_2] => 5 
                ) 
    [title3] => Array ( 
                [id_3] => 8 
                ) 
    [title4] => Array ( 
                [id_4] => 3 
                ) 
    [title5] => Array ( 
                [id_5] => 2 
                ) 
    )

I want to produce an output in a foreach loop where i need all the values of this array:

<a href="page=?"<?php echo $id; ?>"><?php echo $title.' '.$number; ?>

$top5 is the array and when i use a foreach like below:

foreach($top5 as $key => $val) {
    echo $key // outputs the name of title
    echo $val // outputs nothing;
             // i need to output the id and number as well, belonging to each title

}

Why do your arrays have completely different "id" names? Those should at the very least all be id, not id_1, id_2, etc. — Mike 'Pomax' Kamermans
– Mike 'Pomax' Kamermans, Commented May 25, 2020 at 20:05

AbraCadaver · Accepted Answer · 2020-05-25 20:09:15Z

2

There are functions to get those if there is only one element or if it will always be the first one:

foreach($top5 as $key => $val) {
    echo $key;
    echo key($val);
    echo current($val);  //can also use reset()
}

You could also use the id key:

foreach($top5 as $key => $val) {
    echo $key;
    echo $id = key($val);
    echo $val[$id];
}

answered May 25, 2020 at 20:09

AbraCadaver

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4 Comments

Oli Over a year ago

Nice, key didn't occur to me

john Over a year ago

Super. Works perfect!

john Over a year ago

any idea how i can sort the array based on the numbers in descending order? rsort($top5) is not the solution...

AbraCadaver Over a year ago

That's another question. Make sure to but a var_export of the array in it to make it easier to answer.

Oli · Accepted Answer · 2020-05-25 20:08:59Z

2

You could do something like this, either by array pointer or get key by first key:

   foreach($top5 as $title => $ids) {
       echo $title;
       echo current($ids); // By array pointer
       echo $ids[array_keys($ids)[0]]; // By first key
   }

answered May 25, 2020 at 20:08

Oli

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