PHP Basic: Juggling Type Step By Step Tutorial

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PHP Basic: Juggling Type

Tag: data type, juggling Category: PHP Basic
post: 01 Mar 2008 read: 168

PHP Basic Data Type Step By Step Tutorial - Part 9: Variable type in PHP is determined by the context where the variable is used. For example, if a variable is filled with an integer number, so the variable becomes to have integer type.

For example, if some of the operand has the type of float, then all operand will be evaluated as float, so the result will become float type. It means that, the changing type from operand is how the operand be evaluated by a certain operator.

Pay attention to the example of using of juggling at script as follow:
File name: juggling.php


<html>
<head>
<title>Juggling Type</title>
</head>
<body>
<h1>Juggling Type</h1>
<? 
$a = "0";
echo "\$a = $a"."<br>";
$a += 7;
echo "\$a = $a"."<br>";
$a = $a + 1.3;
echo "\$a is float = $a"."<br>";
$a = 7 + "10 pack";
echo "\$a is integer = $a"."<br>";
$a = 5 + "15 pack";
echo "\$a is integer = $a"."<br><br><br>";

$b=3000;
$c=30;
$d=$b.$c;
echo "\$b = $b"."<br>";
echo "\$c = $c"."<br>";
echo "\$d = $d";
?>
</body>
</html>

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PHP Basic: Juggling Type