Trying to create a generalized function in PHP 5.2, error message not showing

Trying to create a generalized function in PHP 5.2, error message not showing

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Trying to create a generalized function in PHP 5.2, error message not showing
Tag : php , By : SpittingCAML
Date : November 29 2020, 09:01 AM

will be helpful for those in need Further to my comment, here is what I meant by passing the variables as an array then looping over them, applying your patterns, and passing $errors by reference:
$patterns = array(
    "fname" => '/^[a-zA-Z]{2,15}$/',
    "lname" => '/^[a-zA-Z]{2,15}$/',
    "phone" => '/^(\(\d{3}\))(\d{3}\-)(\d{4})$/',
    "city" => '/^[a-zA-Z]{3,20}$/',
    "state" => '/^[a-zA-Z]{2}$/',

$errors = array(
    "fname" => "Please enter your FIRST name between 2 and 15 letters.<br>",
    "lname" => "Please enter your LAST name between 2 and 15 letters.<br>",
    "phone" => "Please enter your phone number in (###)###-### format.<br>",
    "city" => "Please enter your city name between 3 and 20 letters.<br>",
    "state" => "Please enter your state's abbreviation (Example: CA).<br>",

// Pass by ref--------------------------------vv
function validateFormInput($input, $patterns, &$errors)
        $new    =   false;
        foreach($input as $key => $value) {
            if(preg_match($patterns[$key], $value, $match))

        return (empty($errors));

$valid  =   false;

if(isset($_POST['submit'])) {
    $inputs =   $_POST;

    $valid  =   validateFormInput($inputs,$patterns,$errors);

        echo implode("<br />",$errors);

if(!$valid) {
<form method="post">
    <input type="text" name="fname" value="Name" />
    <input type="text" name="lname" value="LastName" />
    <input type="text" name="phone" value="123-123-1233" />
    <input type="text" name="city" value="Reno" />
    <input type="text" name="state" value="NsrV" />
    <input type="submit" name="submit" value="submit" />
<?php   }

function validateFormInput($input)
        $errors =   false;

        foreach($input as $key => $value) {
            $pattern    =   patternList($key);

            if(!preg_match($pattern, trim($value), $match)) {
                $errors[$key]   =   errorMsg($key);

        return $errors;

function patternList($name = false)
        $patterns = array(
            "fname" => '/^[a-zA-Z]{2,15}$/',
            "lname" => '/^[a-zA-Z]{2,15}$/',
            "phone" => '/^(\(\d{3}\))(\d{3}\-)(\d{4})$/',
            "city" => '/^[a-zA-Z]{3,20}$/',
            "state" => '/^[a-zA-Z]{2}$/',

        return (isset($patterns[$name]))? $patterns[$name]:false;

function errorMsg($name = false)
        $errors = array(
            "fname" => "Please enter your FIRST name between 2 and 15 letters.",
            "lname" => "Please enter your LAST name between 2 and 15 letters.",
            "phone" => "Please enter your phone number in (###)###-### format.",
            "city" => "Please enter your city name between 3 and 20 letters.",
            "state" => "Please enter your state's abbreviation (Example: CA).",

        return (isset($errors[$name]))? $errors[$name]:false;

function printPre($val = false)
        echo "<pre>";
        echo "</pre>";
        $data = ob_get_contents();

        return $data;   

if(isset($_POST['submit'])) {

    if(ERRMODE) { 
        echo printPre($_POST);
        echo printPre($_FILES); 

    $errors         =   validateFormInput($_POST);
    $formValid      =   (empty($errors));

    $fname          =   htmlspecialchars($_POST['fname']);
    $lname          =   htmlspecialchars($_POST['lname']);
    $phone          =   htmlspecialchars($_POST['phone']);
    $city           =   htmlspecialchars($_POST['city']);
    $state          =   htmlspecialchars($_POST['state']);
    $mobile         =   preg_replace('/\D+/', '', $phone);
?><!DOCTYPE html>
<title>Lesson 7</title>
<meta charset="UTF-8">
<meta name="description" content="php">
<meta name="keywords" content="php">
<meta name="author" content="William Payne">
<link rel="stylesheet" type="text/css" href="xxxxxxxxxxxx">
    <div class="formLayout">
  if (empty($formValid)) {
            echo implode("<br />",$errors);
    <form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" method="post" enctype="multipart/form-data">  
     <?php echo $error_text ?>
     <label>First Name:</label><input name="fname" type="text" value="<?php echo (!empty($fname))? $fname : ""; ?>"><br>
     <label>Last Name:</label><input name="lname" type="text" value="<?php echo (!empty($lname))? $lname : ""; ?>"><br>
     <label>Phone Number:</label><input name="phone" type="text" value="<?php echo (!empty($phone))? $phone : ""; ?>"><br>
     <label>City:</label><input name="city" type="text" value="<?php echo (!empty($city))? $city : ""; ?>"><br>
     <label>State:</label><input name="state" type="text" value="<?php echo (!empty($state))? $state : ""; ?>"><br>
     <input name="submit" id="submit" type="submit" value="submit"><br>
  } else {
        <p><strong><?php echo "$welcome_msg"; ?></strong></p>  
        <p><strong><?php echo "{$lname}, {$fname}";?></strong></p>
        <p><strong><?php echo "{$phone}"; ?></strong></p>
        <p><strong><?php echo "{$city}, {$state}"; ?></strong></p> 

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Date : March 29 2020, 07:55 AM
I wish did fix the issue. I don't like this, but it works. If anyone has a better way of doing this, please let me know. Thank you.
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