PHP Form TextField
In this chapter you will learn:
- What is PHP Form TextField
- Value attribute
- Example - Read value from text field
- Example - A PHP Number Guessing Script
Description
A text input field allows the user to enter a single line of text.
Value attribute
You can optionally prefill the field with an initial value using the value attribute .
To leave it blank, specify an
empty string for the value attribute, or leave the attribute out altogether.
<label for="textField">A text input field</label>
<input type="text" name="textField" id="textField" value="" />
Example 1
The following code is for index.htm file and it has a text field and submit button.
<html>/* java 2 s .c o m*/
<body>
<form action="index.php" method="get">
<input type="text" name="user" />
<input type="submit" value="hit it!" />
</form>
</body>
</html>
Name the following script as index.php and put it into the same folder as
above index.htm file. It accepts the value from the text field by using
field name user.
<?php
print "Welcome <b>" . $_GET ['user'] . "</b><br/>";
?>
Example 2
A PHP Number Guessing Script
<?php/*j a v a 2 s . co m*/
$num_to_guess = 42;
$message = "";
if ( ! isset( $_POST['guess'] ) ) {
$message = "Welcome!";
} else if ( $_POST['guess'] > $num_to_guess ) {
$message = $_POST['guess']." is too big!";
} else if ( $_POST['guess'] < $num_to_guess ) {
$message = $_POST['guess']." is too small!";
} else {
$message = "Well done!";
}
?>
<html>
<body>
<h1>
<?php print $message ?>
</h1>
<form method="post" action="<?php print $_SERVER['PHP_SELF']?>">
<p>
Type your guess here:
<input type="text" name="guess" />
<input type="submit" value="submit" />
</p>
</form>
</body>
</html>
Next chapter...
What you will learn in the next chapter:
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