pTutorial

New way to learn PHP

PHP 5 Array

Arrays

Arrays are complex variables that store a group of element under a single variable name, Indexed by the number or strings. In case of number it always starts from zero.

Example: An array variable $number store many number but in case of general variable it’s store only one value.

In case of general variable:
$number = 10;
In case of array:
$number = array (10, 20, 30);

You can easily access array element using index number that always start from zero.
First number :-$number[0]
Second number :-$number[1]
Third number :-$number[2]

Sum of an array using for loop

<?php

echo "Sum of an array using for loop"."
"; $numbers = array( 8, 5, 7, 12, 50); $a=count($numbers); $sum=0; for( $i=0; $i < $a; $i++ ) { $sum=$sum+$numbers[$i]; } echo $sum; ?>

Feature of arrays

  • Arrays can be of any length - An array can store one value, or millions of values, all referenced via a single variable name
  • It's easy to manipulate all values in an array.
  • An array is useful for storing a group of related values
  • Easily handle any of the element in array
.

An array starts from zero, that's shown in above example.

Types of array

There are three type of array:-

  • Numeric array
  • Associative array
  • Multidimensional array

All three arrays has been explained in next sections.


QUOTES OF THE DAY

Wonder is the first cause of philosophy.

LIKE ON FACEBOOK

+1 ON GOOGLE

SHARE ON TWITTER