I'm working in a code that find the next array value based on the current value but still always returning 1 as result.
$users_emails = array('Spence', 'Matt', 'Marc', 'Adam', 'Paul');
$current = 'Spence';
$keys = array_keys($users_emails);
$ordinal = (array_search($current,$keys)+1);
$next = $keys[$ordinal];
echo $next;
What's wrong?
You are searching the wrong array to start with and echoing the wrong array too.
$users_emails = array('Spence', 'Matt', 'Marc', 'Adam', 'Paul');
$current = 'Spence';
$ordinal = (array_search($current,$users_emails)+1);
$next = $users_emails[$ordinal];
echo $next;
See my code, I search for Spence in the array with names and it returns a key number.
This key number should echo in user emails not keys.
$users_emails = array('a' => 'Spence', 'b' => 'Matt', 'c' => 'Marc', 'd' => 'Adam', 'e' => 'Paul');
$keys = array_values(array_keys($users_emails));
$current = 'Matt';
$next = ""; // set to not get notice if end of array
$ordinal = array_search($current,$users_emails);
$nextkey = (array_search($ordinal, $keys)+1);
If(!isset($keys[$nextkey])){
// what to do if your at the end of array
// $nextkey = 0;
// Echo "message";
// Or whatever you want
}else{
$next = $users_emails[$keys[$nextkey]];
}
echo $next;
I use array_values on the keys to get a indexed array that accepts +1 to find the next key in the array.
$keys are the keys, not the value. Use the array with the $ordinal.
$next = $users_emails[$ordinal];
Demo: https://3v4l.org/REhGr
The array_keys gives you an array of the keys. Use your normal array for the array_search as well. Here's a visual of what you currently are building for $keys.
Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => 3
[4] => 4
)
Demo: https://3v4l.org/GQQcF
$users_emails = array('Spence', 'Matt', 'Marc', 'Adam', 'Paul');
$current = 'Marc';
$ordinal = (array_search($current, $users_emails)+1);
$next = !empty($users_emails[$ordinal]) ? $users_emails[$ordinal] : FALSE;
echo $next;
Just use this one:
$users_emails = array('Spence', 'Matt', 'Marc', 'Adam', 'Paul');
$current = 'Spence';
$ordinal = array_search($current,$users_emails) + 1;
$next = $users_emails[$ordinal];
echo $next;
Here's what I mean:
<?php
$users_emails = array('Spence', 'Matt', 'Marc', 'Adam', 'Paul');
$current = 'Spence'; $ordinal = array_search($current, $user_emails)+1;
$next = $user_emails[$ordinal];
echo $next;
?>
Depending what you're doing you may want to use next() instead:
<?php
$user_emails = array('Spence', 'Matt', 'Marc', 'Adam', 'Paul');
$current = current($user_emails); $next = next($user_emails); reset($user_emails);
echo $next;
?>
I have checked your code. In your code, array_keys function returns the indexes of $users_email as:
Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 3 [4] => 4 )
Now you are searching $current = 'Spence'; in indexes array. That's why it returns 1.
You want the next value of searched string you should as:
$users_emails = array('Spence', 'Matt', 'Marc', 'Adam', 'Paul');
$current = 'Spence';
//$keys = array_keys($users_emails);//print_r($keys);
$ordinal = (array_search($current,$users_emails)+1);
$next = $users_emails[$ordinal];
echo $next;
output:
Matt
$keysand use$user_emails.