Answer Posted / lakshmanan

Using extends keyword you can extend Superclass.

Lets go for an example,

Class Pay{
var $Amt=10;
var $M="";
Function CheckAmt($Amt){
$this->Amt=$Amt;
}
}
Class Salary extends Pay{
Function CheckAmt($Amt){
$this->Amt=$Amt;
If ($this->Amt > 1000){
echo "Good Salary";
} else {
echo "Okay Salary";
}
}
}
$CheckP = new Pay;
echo $CheckP->Amt;
echo "<br>";
$CheckP->CheckAmt(1000);
echo $CheckP->Amt;
echo "<br>";
$CheckS = new Salary;
echo $CheckS->CheckAmt(100000);

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