Php Interview Questions 2015

1. What is the difference between a numeric and an associative array?
   =>
   A numeric array can be indexed numerically using numbers or numeric variables.
   An associative array uses alphanumeric identifiers to index elements.

 Example of Numeric Array :

Adding items to an array

<?php

$names[] = “Sachin”;

$names[] = “Sehwag”;

$names[] = “Rahul”;

$names[] = “Laxman”;

print_r($names);

?>

Example of Associative Array :

Adding items to an array using explicit locations

<?php

$names[0] = “Sachin”;

$names[1] = “Sehwag”;

$names[2] = “Rahul”;

$names[3] = “Laxman”;

print_r($names);

?>

Output of both the programs is same as :

Array

(

[0] => Sachin

[1] => Sehwag

[2] => Rahul

[3] => Laxman

)