PHP - Getting the index of a element from a array

Question

How can I get the current element number when I m traversing a array   I know about count    but I was hoping there s a built-in function for getting the current field index too  without having to add a extra counter variable   like this   foreach  array as  key   gt  value    if index  key     count  array

User · Answer

I recently had to figure this out for myself and ended up on a solution inspired by @Zahymaka 's answer, but solving the 2x looping of the array.

What you can do is create an array with all your keys, in the order they exist, and then loop through that.

        $keys=array_keys($items);
        foreach($keys as $index=>$key){
                    echo "position: $index".PHP_EOL."item: ".PHP_EOL;
                    var_dump($items[$key]);
                    ...
        }

PS: I know this is very late to the party, but since I found myself searching for this, maybe this could be helpful to someone else

User · Answer

You should use the key   function   key  array    should return the current key   If you need the position of the current key   array search  key  array keys  array

User · Answer

There is no way to get a position which you really want  For associative array  to determine last iteration you can use already mentioned counter variable  or determine last item s key first   end  array    last   key  array   foreach  array as  key   gt  value    if  key     last

User · Answer

foreach          i        if index  key      i

User · Answer

an array does not contain index when elements are associative  An array in php can contain mixed values like this    var   array  apple    banana    foo    gt   grape    carrot    bar    gt   donkey       print r  var     Gives you   Array        0    gt  apple      1    gt  banana      foo    gt  grape      2    gt  carrot      bar    gt  donkey     What are you trying to achieve since you need the index value in an associative array

User · Answer

function Index  index         Count   count  YOUR ARRAY       if   index  lt    Count             Keys   array keys  YOUR ARRAY            Value   array values  YOUR ARRAY           return  Keys  index             Value  index         else           return  Out of the ring            echo  Index       Index 0     Replace the    YOUR ARRAY

User · Answer

PHP arrays are both integer-indexed and string-indexed   You can even mix them   array  red    green    white    color3   gt  blue   3  gt  yellow      What do you want the index to be for the value  blue    Is it 3   But that s actually the index of the value  yellow   so that would be an ambiguity   Another solution for you is to coerce the array to an integer-indexed list of values   foreach  array values  array  as  i   gt   value      echo   i   value n       Output   0  red 1  green 2  white 3  blue 4  yellow

[php] PHP - Getting the index of a element from a array

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