<?php
//braces.php
//Take special note of the following, which is particularly convenient when
//you want to interpolate array values inside double-quoted strings.

$n = 6;
$x = 3.5;
$s = "Hello";
echo "\$n is $n, \$x is $x and \$s is $s.\n"; 
echo "\$n is {$n}, \$x is {$x} and \$s is {$s}.\n"; 
echo "1Press Enter to continue ... "; $discard = fgets(STDIN);

$a = array(2, 4, 6);
echo "\$a[0] is $a[0], \$a[1] is $a[1], \$a[2] is $a[2].\n";
echo "\$a[0] is {$a[0]}, \$a[1] is {$a[1]}, \$a[2] is {$a[2]}.\n";
echo "2Press Enter to continue ... "; $discard = fgets(STDIN);

$b = array('Al'=>10, 'Bob'=>20, 'John'=>30);
echo "\$b['Al'] is {$b['Al']}, "
    . "\$b['Bob'] is {$b['Bob']}, "
    . "\$b['John'] is {$b['John']}.\n";
echo "\$b['Al'] is $b[Al], "
    . "\$b['Bob'] is $b[Bob], "
    . "\$b['John'] is $b[John].\n";
//But the following one does not work:
//echo "\$b['Al'] is $b['Al'], "
//    . "\$b['Bob'] is $b['Bob'], "
//    . "\$b['John'] is $b['John'].\n";
echo "3Press Enter to continue ... "; $discard = fgets(STDIN);
?>