Example-1
<?php
echo"First 10 Fibonacci no.";
$i=1;
$j=1;
echo"$i , $j ,";
for($k=2;$k<50;$k++)
{
$k=$i+$j;
$i=$j;
$j=$k;
echo" $k ,";
}
?>
Example-2
<!DOCTYPE html>
<html>
<body>
<form name="f1" action="upload.php" method="post" enctype="multipart/form-data">
Select image to upload:
<input type="file" name="fileToUpload" id="fileToUpload">
<input type="submit" value="Upload Image" name="submit">
</form>
</body>
</html>
Example-3
<?php
$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) {
$check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
if($check !== false) {
echo "File is an image - " . $check["mime"] . ".";
$uploadOk = 1;
} else {
echo "File is not an image.";
$uploadOk = 0;
}
}
// Check if file already exists
if (file_exists($target_file)) {
echo "Sorry, file already exists.";
$uploadOk = 0;
}
// Check file size
if ($_FILES["fileToUpload"]["size"] > 500000) {
echo "Sorry, your file is too large.";
$uploadOk = 0;
}
// Allow certain file formats
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
&& $imageFileType != "gif" ) {
echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
$uploadOk = 0;
}
// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file
} else {
if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";
} else {
echo "Sorry, there was an error uploading your file.";
}
}
?>
Example-5
<html>
<body>
<?php
if(isset($_POST["submit"]))
{
$value = $_POST['val1'];
}
else
{
$value = "";
}
?>
<form name="f1" action="#" method="post">
Enter Age<input type="text" name="val1" required/>
<input type="submit" name="submit">
</form>
<?php
if($value)
{
if($value>=18)
{
echo "You are Eligible for Vote"; }
else
{
echo "You are not Eligible for Vote"; }
}
?>
</body>
</html>