PHP/Form/Form Validation — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
Admin (обсуждение | вклад) м (1 версия) |
(нет различий)
|
Текущая версия на 10:04, 26 мая 2010
Содержание
A Sample Form Element Validation Function
<source lang="html4strict">
<?php
function phone_validate($data, $desc) { $regex = "/^\([2-9][0-9]{2}\)[2-9][0-9]{2}-[0-9]{4}/i"; if(preg_match($regex, $data) != 1) { return "The "$desc" field isn"t valid!"; } return true; }
?>
</source>
Displaying error messages with the form
<source lang="html4strict">
<? if ($_POST["_submit_check"]) {
if ($form_errors = validate_form()) { show_form($form_errors); } else { process_form(); }
} else {
show_form();
} function process_form() {
print "Hello, ". $_POST["my_name"];
} function show_form($errors = "") {
if ($errors) {print "Please correct these errors:
- "; print implode("
- ", $errors); print "
} print<<<_HTML_
<form method="POST" action="$_SERVER[PHP_SELF]">
Your name: <input type="text" name="my_name">
<input type="submit" value="Say Hello">
<input type="hidden" name="_submit_check" value="1">
</form>
_HTML_;
}
function validate_form() {
$errors = array(); if (strlen($_POST["my_name"]) < 3) { $errors[] = "Your name must be at least 3 letters long."; } return $errors;
} ?>
</source>
Elementary Form Validation
<source lang="html4strict">
<?php
if(isset($_GET["submit"])) { if(preg_match("/^\(([2-9][0-9]{2})\)[2-9][0-9]{2}-[0-9]{4}$/i", $_GET["phone"]) != 1) { echo "The phone field was invalid
"; } } else { /* Code to process form here */ }
?>
<HTML>
<HEAD><TITLE>Elementary form validation</TITLE></HEAD>
<BODY>
<FORM ACTION="<?php echo $_SERVER["PHP_SELF"]; ?>" METHOD=GET>
<INPUT TYPE="hidden" NAME="submit" VALUE="1">
Phone: <INPUT TYPE="text" NAME="phone" SIZE=13 MAXLENGTH=13>
(ex. (333)555-1212)
<INPUT TYPE="submit" VALUE="Send">
</FORM>
</HTML>
</source>
Form Data Validation With Error Count
<source lang="html4strict">
<HTML> <BODY> <FORM METHOD="POST" ACTION="FormDataValidationWithErrorCount.php">
Contact Information
Nickname: | <INPUT TYPE="TEXT" NAME="nickname"> | |||
First Name: | <INPUT TYPE="TEXT" NAME="firstname"> | |||
Middle Name: | <INPUT TYPE="TEXT" NAME="middlename"> | |||
Last Name: | <INPUT TYPE="TEXT" NAME="lastname"> | |||
Primary Email: | <INPUT TYPE="TEXT" NAME="email"> | Secondary Email: | <INPUT TYPE="TEXT" NAME="secondaryemail"> | |
<INPUT TYPE="TEXT" NAME="officeaddress2"> |
Nickname: | <INPUT TYPE="TEXT" NAME="nickname"> | |||
Title: | <INPUT TYPE="TEXT" NAME="title"> | |||
First Name: | <INPUT TYPE="TEXT" NAME="firstname"> | |||
Middle Name: | <INPUT TYPE="TEXT" NAME="middlename"> | |||
Last Name: | <INPUT TYPE="TEXT" NAME="lastname"> | |||
Primary Email: | <INPUT TYPE="TEXT" NAME="email"> | Secondary Email: | <INPUT TYPE="TEXT" NAME="secondaryemail"> | |
Company Name: | <INPUT TYPE="TEXT" NAME="companyname"> | |||
Office Address: | <INPUT TYPE="TEXT" NAME="officeaddres1"> | Home Address: | <INPUT TYPE="TEXT" NAME="homeaddress"> | |
<INPUT TYPE="TEXT" NAME="officeaddress2"> | ||||
City: | <INPUT TYPE="TEXT" NAME="officecity"> | <INPUT TYPE="TEXT" NAME="homecity"> | ||
State: | <INPUT TYPE="TEXT" NAME="officestate"> | <INPUT TYPE="TEXT" NAME="homestate"> | ||
Zip: | <INPUT TYPE="TEXT" NAME="officezip"> | <INPUT TYPE="TEXT" NAME="homezip"> | ||
Phone: | <INPUT TYPE="TEXT" NAME="officephone"> | <INPUT TYPE="TEXT" NAME="homephone"> | ||
Birthday: | <INPUT TYPE="TEXT" NAME="birthday"> | |||
Spouse Name: | <INPUT TYPE="TEXT" NAME="spousename"> | Childrens" Names: | <INPUT TYPE="TEXT" NAME="children"> | |
Anniversary: | <INPUT TYPE="TEXT" NAME="anniversary"> |
<INPUT TYPE="SUBMIT" VALUE="Submit">
<INPUT TYPE="RESET" VALUE="Clear the Form">
</FORM>
</BODY>
</HTML>
</source>
Validating form data
<source lang="html4strict">
<? if ($_POST["_submit_check"]) {
if (validate_form()) { process_form(); } else { show_form(); }
} else {
show_form();
} function process_form() {
print "Hello, ". $_POST["my_name"];
} function show_form() {
print<<<_HTML_
<form method="POST" action="$_SERVER[PHP_SELF]">
Your name: <input type="text" name="my_name">
<input type="submit" value="Say Hello">
<input type="hidden" name="_submit_check" value="1">
</form>
_HTML_;
}
function validate_form() {
if (strlen($_POST["my_name"]) < 3) { return false; } else { return true; }
} ?>
</source>