php检查数组索引超出范围

Question

Consider the following array.

$a['a'] = 1;
$a['b'] = 2;
$a['c'] = 3;
$a['d'] = 4;

and then i am looping the array

foreach( $a as $q => $x )
{

  # Some operations ....

  if( isLastElement == false  ){ 
     #Want to do some more operation
  }
}

How can i know that the current position is last or not ?

Thanks.

Answer 1

Take a key of last element & compare.

$last_key = end(array_keys($a));

foreach( $a as $q => $x )
{
 # Some operations ....
 if( $q == $last_key){ 
     #Your last element
  }
}