Array is a gathering of character, arrays or integers in order. Array in PHPoC consists of value and key. Key is only numbers starting from 0.
<?php
$int1 = 1;
$char1 = 's';
$str1 = 'sollae';
$array1 = array(1, 2, 3); // array only with integer
$array2 = array('a', 'b', 'c'); // array only with string
$array3 = array($int1, $char1, $str1); // array with mix of integers and string
?>
<?php
$array1 = array(1, 2, 3); // define and initialize array
$array1[0] = 5; // set the value of key 0 to 5
echo $array1[0]; // print the value of key 0
?>
[result]
5
<?php
$str = "test"; // define a string variable
$str[0] = 'T'; // set the first character to T
echo $str;
?>
[result]
Test
<?php
$array0 = array(0, 1, 2); // one-dimension
$array1 = array(3, 4, 5);
$array2 = array($array0, $array1, array(6, 7, 8)); // two-dimension
?>