What is a simple method to return the array key when using array[] to add new values.
For example:
$array[] = 'Hello World';
return $Key_of_Hello_World;
The method I'm thinking of involves:
$key = count($array)-1;
Is there a different solution?
Conclusion
A combination of end() and key() is the best in general as it allows for associative but if your array only uses numerical keys, count()-1 seems to be the simplest and just as fast. I added this to the other linked question.
$array[] = 'Hello World';
end($array); // set internal pointer to end of array
$key = key($array); // get key of element where internal pointer is pointing at
return $key;
$key = end(array_keys($array)); which is a tiny bit slower but only requires one line. I'm still pondering whether count-1 will work well enough though as it seems just as fast as this method but obviously wouldn't work with associative like this would.you want to use array_keys: https://www.php.net/manual/es/function.array-keys.php
$array[] = 'Hello World';
return array_keys($array, 'Hello World!');
$keys = array_keys($array); $key = end($keys); to avoid the strict standards warning.You can do something like this too..
<?php
function printCurrKey(&$array)
{
return array_keys($array)[count($array)-1];
}
$array[] = 'Hello World';
echo printCurrKey($array);// "prints" 0
$array[] = 'This is a new dimension !';
echo printCurrKey($array);// "prints" 1
$array['newkey'] = 'Hello World is has a new key !';
echo printCurrKey($array);// "prints" newkey
you can use array_keys() for return keys of an array
return array_keys($array)
for individual key try to use
return array_keys($array, 'Hello World!');
end($array); $key = key($array);