Mengenal Variable Pada PHP

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Berikut Script php pertama saya di mata kuliah Pemrograman Internet II.


<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Pertemuan 1 Gan!! [I LOVE KASKUS]</title>
</head>
<body style="font-family:Arial, Helvetica, sans-serif; font-size:12px; color:#000033">

<?php
echo "<b><span style='font-family:Arial, Helvetica, sans-serif; font-size:21px; color:#FF0000'>Latihan PHP Pertama-x</span></b>";

/*Identifier
#tipe data skalar
1. Boolean
2. Integer
3. String
4. Floatingpoint

#tipe data coumpound
1. array
2. object

# Tipe data Khusus
1. null
*/
echo "<p></p>";
echo "================================================<br/>";
echo "Boolean<br/>";
$a = true;
$b = false;

echo "\$a = $a<br/>";
echo "\$b = $b<--Isi bernilai nol<br/> ";
echo "================================================<br/>";
?>
<p></p>

<?php
/*urutan aritmatik - / **/
echo "================================================<br/>";
echo "Integer<br/>";
$harga = 1000;
$jumlah = 5;
$hargatotal = $harga * $jumlah;
echo "Harga = Rp.1000<br/>";
echo "Jumlah = 5<br/>";
echo "Harga totalnya adalah : Rp. $hargatotal";
echo "<p></p>";
echo "================================================<br/>";
?>

<?php
echo "================================================<br/>";
echo "Type Float<br/>";
$x = 1.5e30;
$y = 5.0;
$z = $x * $y;
echo "x = $x<br/>";
echo "y = $y<br/>";
echo "z = $z<br/>";
echo "================================================<br/>";
?>
</body>
</html>


Beberapa hal yang dibahas di pertemuan satu yaitu:
1. Penulisan variable di php
2. Mengenal variable dan tipe data di php
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