如何计算数组中值的顺序？

Question

I have an array with a few values and want to do something like this:

 $arrayvalues = array_reverse(explode(', ', somefunction()));
 foreach ( $arrayvalues as $arrayvalue ) :
           printf('<li class="'.$countvalue.'">'.$arrayvalue.'</li>');  
 endforeach;

I want to have in $countvalue the number of the value in the array

ie... the array will be something like this: ("apple", "orange", "grapefruit")

I want the number to match the order number of these values apple = 1, orange = 2, grapefruit = 3

or actually even if it's just an incremental number according to the values echoed it doesn't matter, I just need to insert a css class represented by an incremembtal number

I tried playing $i... count... but I don't know how to achieve what I want; I'm more a designer than a coder, I looked in the PHP help but couldn't find a clear solution for my case

thank you

Answer 1

Use a for loop to iterate over your array, like so:

 for( $i = 0, $j = count( $arrayvalues); $i < $j; $i++) :
           printf('<li class="' . ($i + 1) . '">' . $arrayvalues[$i] . '</li>');
 endfor;

If you want the index $i to start at one, you need to add one in the printf statement.

Side note: You don't need printf here if you're not actually generating formatted output.