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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Hacker's Corner</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body>
<h1>Please Don't Fear!</h1>
<b>Sandbox:</b> Let's Roll!<br />
<p>
<?php
error_reporting(E_ALL | E_STRICT);
ini_set("display_errors", 1);
$pi = 3.14159;
echo "Pi = " . $pi . "<br />";
$hellomsg = "Hello Kyle, world is good.<br />";
/* note: single quotes would not do in place variable substitution */
echo "{$hellomsg}"; /* weird, opposite of bash */
$myarray = array(12, 21, 33, 99, 33, "fox" /* hmm this is nice */, array("bro", "brotato"));
echo "2nd item in our array is " . $myarray[1] . " " . $myarray[6][1] . ".<br /><br />";
/* key-value pairs, i like them, dejavu Lua! */
$keyval = array("name" => "bro", "status" => "amused", "location" => "/dev/null");
echo "$keyval[name] is $keyval[status]";
echo "</p><pre>";
print_r($keyval);
echo "</pre><br /><p>";
/* array into a string? seems heck useful */
$str_from_arr = implode(" ~ ", $keyval); /* 1st param = glue */
echo "the imploded array is: {$str_from_arr}";
?>
<!-- just easier to type in html :p -->
<br />
Is Pi set?
<?php
if (isset($pi)) /* will catch undefined variables */
echo "Yes" . "<br />";
else
echo "No" . "<br />";
/* how to escape? */
$var1 = "\"brotato escaped\"";
echo "escaped: " . $var1 . ", ha it is just like C!". "<br />";
unset($pi); /* why not just set it to null? we can set it to 0, "0"! and null */
if (empty($pi))
echo "Pi has been unset.<br />";
?>
<br />
Typecasting, <b>php is very clever!</b><br />
<?php
$pi = 3.14159;
$piphi = $pi + "1.618 i love this number";
echo "piphi is of type " . gettype($piphi) . " and equals to {$piphi}.<br />";
settype($piphi, "string"); /* or just typecast, (string) in front ? */
/* constants */
define("PI_VAL", 3.14159);
?>
</p>
</body>
</html>
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