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PHP Script Tips - Understanding String Literals and Operations

By: FYICenter.com

Part:   1  2  3  4  

(Continued from previous part...)

Here is a PHP script example of converting some examples:

<?php 
$foo = 1 + "10.5";
echo "\$foo=$foo; type is " . gettype ($foo) . "\n";
$foo = 1 + "-1.3e3";
echo "\$foo=$foo; type is " . gettype ($foo) . "\n";
$foo = 1 + "bob-1.3e3";
echo "\$foo=$foo; type is " . gettype ($foo) . "\n";
$foo = 1 + "bob3";
echo "\$foo=$foo; type is " . gettype ($foo) . "\n";
$foo = 1 + "10 Small Pigs";
echo "\$foo=$foo; type is " . gettype ($foo) . "\n";
$foo = 4 + "10.2 Little Piggies";
echo "\$foo=$foo; type is " . gettype ($foo) . "\n";
$foo = "10.0 pigs " + 1;
echo "\$foo=$foo; type is " . gettype ($foo) . "\n";
$foo = "10.0 pigs " + 1.0;
echo "\$foo=$foo; type is " . gettype ($foo) . "\n";
?>

This script will print:

$foo=11.5; type is double
$foo=-1299; type is double
$foo=1; type is integer
$foo=1; type is integer
$foo=11; type is integer
$foo=14.2; type is double
$foo=11; type is double
$foo=11; type is double

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