$arr1 = array( 0 => array( 'name' => 'tom', 'age' => 22 ), 1 => array( 'name' => 'nick', 'age' => 18 ) ); code example

Example 1: php initialize array

// Initialize Empty Array (PHP 5.4 and higher)
$myArray = [];

// Initialize Empty Array (Before PHP 5.4)
$myArray = array();

Example 2: php define array first 10 number

<?php
// array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
foreach (range(0, 12) as $number) {
    echo $number;
}

// The step parameter
// array(0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100)
foreach (range(0, 100, 10) as $number) {
    echo $number;
}

// Usage of character sequences
// array('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i');
foreach (range('a', 'i') as $letter) {
    echo $letter;
}
// array('c', 'b', 'a');
foreach (range('c', 'a') as $letter) {
    echo $letter;
}
?>