PHP if statements
if statements inside they if block is execute the once them codition is true.
Syntax :-
statement ;
if (condition)
{
/*block of code */
}
PHP if Statements
Example :-
Q] Accept name of student from user and show student name in same page.
<html>
<form action="collect_data_student.php"
method="get">
<label> Enter name</label><br>
<input type="text" name="snm" require>
<br><br>
<input type="submit" value="show" name="b1"
>
<?php
if (isset($_GET["b1"]))
{
$name=$_GET["snm"];
echo " <br> hi :-". $name;
}
?>
</form>
</html>
PHP if Statements
Output :-
Example
2] Accept price and amount the user from and calculate bill .price and bill amount person
get 10% discount of total bill amount 5000.
<html>
<head>
<title>calculate the bile </title>
</head>
<form action="bill.php" method="get">
<label>Price</label>
<input type="number" name="price"
required><br><Br>
<label>quantity</label>
<input type ="number" name="quantity"
required><br><br>
<input type="submit" value="show"
name="b1"required>
</form>
<?php
if(isset($_GET["b1"]))
{
/*input */
$pr=$_GET["price"];
$qty=$_GET["quantity"];
/* operator */
$bill=$pr*$qty;
$discount= ($bill>5000)?10:0;
$disamt=($bill*$discount)/100;
$tbill=$bill-$disamt;
/* output*/
echo" price=" .$pr;
echo "<br>quantity =" .$qty;
echo "<br>Bill=" .$bill;
echo "<br> discount =" .$discount;
echo "<br>discount amount =". $disamt;
echo "<br>total bill = ". $tbill;
}
?>
</html>
output :-
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