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Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
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Robust, sticky form demo with field validation
String Handling in PHP example from a Well House Consultants training course
More on String Handling in PHP [link]

This example is described in the following article(s):
   • Painting a masterpiece in PHP - [link]

If you're searching for a page where you can try this code, select here

Source code: myform.php Module: H107

/* This is an example that shows you how you can define
your form and all the various elements in an array and
then use common code to check that entries have been made
in each and validate them.  This is just a template for
you to work from but is VERY easily extensible */

# The following could be read from a file or database

# You could add in fields for input type, individual error
# messages, etc

$form = array(
"hidden",        "current",      'aax15'),
"First Name",    "fname",        '^[A-Z][a-z]+'),
"Surname",      "sname",        '^[A-Z][a-z]+'),
"Sex",          "gender",       '^[mfMF]$'),
"Age",          "age",          '^\d{1,3}$'),
"Email Addy",   "email",        '^\S+@\S+$'));

# For a live application, put the functions in an include file

function makeform($source) {
$html "";
        foreach (
$source as $row) {
           if (
$row[0] == "hidden") {
$html .=
"<input type = hidden name=$row[1] ".
"value = \"$row[2]\">";
           } else {
$cook htmlspecialchars(stripslashes(
                if (
$explain[$row[1]]) {
$html .= "<font color=red>".
$html .= $row[0] .
"<input name=$row[1] ".
"value = \"$cook\">";
$html .= "<br>";
$html .= "<input type=submit>";

validateform($against) {
$errsofar "";
        foreach (
$against as $row) {
           if (
$row[0] != "hidden") {
$errsofar .= chek($row);

chek($row) {
$matches =
        if (
$matches) return "Y";
$explain[$row[1]] = "You got this one wrong:";

$explain = array();
$needform 1;
if (
$_REQUEST[current] == "aax15") {
$mainhtml "Please correct me<br>";
$errcode validateform($form);
        if (! 
ereg("N",$errcode)) $needform 0;
} else {
$mainhtml "";

if (
$needform == 1) {
$mainhtml .= "<form>".makeform($form)."</form>";
} else {
$mainhtml "Well Done!";
# Business logic to go here
<head><title>Parametrised for fillment </title></head>
<body bgcolor=#FFFFDE><h1>A form to Phil</h1>
<?= $mainhtml ?><hr>
Copyright etc <?= $errcode ?>

Learn about this subject
This module and example are covered on the following public courses:
 * Learning to program in PHP
 * PHP Programming
 * Beginning PHP - weekend course / hobby / club / leisure users
 * PHP Programming
 * Learning to program in PHP
Also available on on site courses for larger groups

Books covering this topic
Yes. We have over 700 books in our library. Books covering PHP are listed here and when you've selected a relevant book we'll link you on to Amazon to order.

Other Examples
This example comes from our "String Handling in PHP" training module. You'll find a description of the topic and some other closely related examples on the "String Handling in PHP" module index page.

Full description of the source code
You can learn more about this example on the training courses listed on this page, on which you'll be given a full set of training notes.

Many other training modules are available for download (for limited use) from our download centre under an Open Training Notes License.

Other resources
• Our Solutions centre provides a number of longer technical articles.
• Our Opentalk forum archive provides a question and answer centre.
The Horse's mouth provides a daily tip or thought.
• Further resources are available via the resources centre.
• All of these resources can be searched through through our search engine
• And there's a global index here.

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