05132005 1203 GMT-6
Im reading about OOP today and writing my first oop in php. The tutorial
is a Calculator. Im having some problems with errors.
The Calculator Class:
<?php
// the calculator class
// declare the internal variable
var $storedValue;
// accessor functions
function setValue( $passedValue){
$this->storedValue= $passedValue;
}
function getValue(){
return $this->storedValue;
}
function addValue( $passedValue ) {
$this -> storedValue += $passedValue;
}
// constructor function
function Calculator() {
$this ->storedValue = 0;
}
class Calculator{
function add ($number1, $number2){
return $number1 + $number2;
}
function subtract($number1, $number2){
return $number1 - $number2;
}
function multiply($number1, $number2){
return $number1 * $number2;
}
function divide($number1, $number2){
return $number1 / $number2;
}
} // end class
?>
The HTML Page
<?php
include ("calculator.php");
?>
<html>
<head>
<title>Try it out - Calculator Memory</title>
</head>
<body>
<?php
$valueToStore = 10;
echo "The value to be stored is $valueToStore<br />";
$myCalculator = new calculator();
$myCalculator -> setValue($valueToStore);
$restoredValue = $myCalculator->getValue();
echo "The value returned is $restoredValue<br />";
?>
</body>
</html>
The error Im getting is:
*Parse error*: syntax error, unexpected T_VAR in *C:\WebDev\Work
Directory\Beg_PHP4\CH9\calculator.php* on line *5
*
That line is var $storedValue;
So, I get that $storedValue is a variable that is only accessiable
inside the class. But Im totaly unclear as to some of these variables.
Like on the function setValue($passedValue). Shouldnt that be named
$valueToStore? And what about $storedValue?
Im just not seeing how these are passed around.
Wade
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