nimzie Posted September 25, 2007 Share Posted September 25, 2007 Hi, I'm using the validation_class.php class to validate forms. If the validation succeeds, I use the Header function to redirect to the next page. If it fails, I put up the error messages as I'd hoped to with this class, but all of the values in the field would ideally remain. What is a good method for preserving things? Here is an example of my code: <?php require "php/validation_class.php"; if (isset($_POST['submit'])) { $example = new Validate_fields; $example->check_4html = false; $example->add_link_field("Email_address", $_POST['email'], "email"); $example->add_text_field("Simple_text", $_POST['code'], "text", "y"); if ($example->validation()) { header( "location: contest.php?&email={$_POST['email']}&code={$_POST['code']}"); } else { $error = $example->create_msg(); } } ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <title>No More Secrets</title> <link href="styles.css" rel="stylesheet" type="text/css" media="screen" /> </head> <body> <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post"> <div id="wrapper"> <div id="headerbar"><div id="header"><a href="/"><img src="images/NMS_banner.gif" alt="bla bla" width="960" height="200" border="0" /></a></div> </div> <div id="navigation"><div id="navigationinside"> <ul id="menu"> <li><a href="index.php" id="selected"><strong>Home </strong></a></li> <li><a href="secrets.html">More blah</a></li> <li><a href="prizes/index.php">Prizes</a></li> <li><a href="http://www.nautel.com/contact.aspx">Contact Us </a></li> <li><a href="http://www.___________.com">Visit ________.com </a></li> </ul></div> </div> <div id="content_home"> <div id="maincontent"> <script type="text/javascript"> AC_FL_RunContent( 'codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0','width','644','height','441','title','Flash','src','digital','quality','high','pluginspage','http://www.macromedia.com/go/getflashplayer','movie','digital' ); //end AC code </script><noscript><object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0" width="644" height="441" title="Flash"> <param name="movie" value="digital.swf" /> <param name="quality" value="high" /> <embed src="digital.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="644" height="441"></embed> </object></noscript></div> <div id="sidebar"> <h1>Enter Contest</h1> <h3>Enter Code</h3> <input type="text" name="code" /><br/> <h3>Enter email address</h3> <input type="text" name="email" /><br/> <input type="submit" name="submit" value="Enter" /> <h3>Win a <a href="prizes/index.php">This is the prize</a>!</h3> <p style="color:#FF0000;padding-left:65px;"> <?php if (isset($error)) echo "{$error}"; ?> </p> </div> <div class="clear"></div></div> <div id="mdrbkgd"> </div> </form> </body> </html> Quote Link to comment Share on other sites More sharing options...
HuggieBear Posted September 25, 2007 Share Posted September 25, 2007 Use the $_POST variables as defaults to the input fields. Regards Huggie Quote Link to comment Share on other sites More sharing options...
localhost1 Posted September 25, 2007 Share Posted September 25, 2007 pls write the function inside the class so that more ideas could be explred Quote Link to comment Share on other sites More sharing options...
nimzie Posted September 25, 2007 Author Share Posted September 25, 2007 This is all the code in the library. I left some of the legal jargon on top cause Olaf Lederer wrote it and I just customized the languages to be en/fr only. That's the only change I've made. I'm off for a bit however will try the suggested value=$_POST['Field'] as part of the HTML code to build the controls.... Thanks for the help! <?php /************************************************************************ Validate_fields Class - verion 1.35 Easy to use form field validation Copyright (c) 2004 - 2006, Olaf Lederer All rights reserved. ... ... ... ______________________________________________________________________ available at http://www.finalwebsites.com Comments & suggestions: http://www.finalwebsites.com/contact.php *************************************************************************/ //error_reporting(E_ALL); class Validate_fields { var $fields = array(); var $messages = array(); var $check_4html = false; var $language; function Validate_fields() { $this->language = "en"; $this->create_msg(); } function validation() { $status = 0; foreach ($this->fields as $key => $val) { switch ($val['type']) { case "email": if (!$this->check_email($val['value'], $key, $val['required'])) { $status++; } break; case "number": if (!$this->check_num_val($val['value'], $key, $val['length'], $val['required'])) { $status++; } break; case "decimal": if (!$this->check_decimal($val['value'], $key, $val['decimals'], $val['required'])) { $status++; } break; case "date": if (!$this->check_date($val['value'], $key, $val['version'], $val['required'])) { $status++; } break; case "url": if (!$this->check_url($val['value'], $key, $val['required'])) { $status++; } break; case "text": if (!$this->check_text($val['value'], $key, $val['length'], $val['required'])) { $status++; } break; case "checkbox": case "radio": if (!$this->check_check_box($val['value'], $key, $val['element'])) { $status++; } } if ($this->check_4html) { if (!$this->check_html_tags($val['value'], $key)) { $status++; } } } if ($status == 0) { return true; } else { $this->messages[] = $this->error_text(0); return false; } } function add_text_field($name, $val, $type = "text", $required = "y", $length = 0) { $this->fields[$name]['value'] = $val; $this->fields[$name]['type'] = $type; $this->fields[$name]['required'] = $required; $this->fields[$name]['length'] = $length; } function add_num_field($name, $val, $type = "number", $required = "y", $decimals = 0, $length = 0) { $this->fields[$name]['value'] = $val; $this->fields[$name]['type'] = $type; $this->fields[$name]['required'] = $required; $this->fields[$name]['decimals'] = $decimals; $this->fields[$name]['length'] = $length; } function add_link_field($name, $val, $type = "email", $required = "y") { $this->fields[$name]['value'] = $val; $this->fields[$name]['type'] = $type; $this->fields[$name]['required'] = $required; } function add_date_field($name, $val, $type = "date", $version = "us", $required = "y") { $this->fields[$name]['value'] = $val; $this->fields[$name]['type'] = $type; $this->fields[$name]['version'] = $version; $this->fields[$name]['required'] = $required; } function add_check_box($name, $element_name, $type = "checkbox", $required_value = "") { $this->fields[$name]['value'] = $required_value; $this->fields[$name]['type'] = $type; $this->fields[$name]['element'] = $element_name; } function check_url($url_val, $field, $req = "y") { if ($url_val == "") { if ($req == "y") { $this->messages[] = $this->error_text(1, $field); return false; } else { return true; } } else { $url_pattern = "http\:\/\/[[:alnum:]\-\.]+(\.[[:alpha:]]{2,4})+"; $url_pattern .= "(\/[\w\-]+)*"; // folders like /val_1/45/ $url_pattern .= "((\/[\w\-\.]+\.[[:alnum:]]{2,4})?"; // filename like index.html $url_pattern .= "|"; // end with filename or ? $url_pattern .= "\/?)"; // trailing slash or not $error_count = 0; if (strpos($url_val, "?")) { $url_parts = explode("?", $url_val); if (!preg_match("/^".$url_pattern."$/", $url_parts[0])) { $error_count++; } if (!preg_match("/^(&?[\w\-]+=\w*)+$/", $url_parts[1])) { $error_count++; } } else { if (!preg_match("/^".$url_pattern."$/", $url_val)) { $error_count++; } } if ($error_count > 0) { $this->messages[] = $this->error_text(14, $field); return false; } else { return true; } } } function check_num_val($num_val, $field, $num_len = 0, $req = "n") { if ($num_val == "") { if ($req == "y") { $this->messages[] = $this->error_text(1, $field); return false; } else { return true; } } else { $pattern = ($num_len == 0) ? "/^\-?[0-9]*$/" : "/^\-?[0-9]{0,".$num_len."}$/"; if (preg_match($pattern, $num_val)) { return true; } else { $this->messages[] = $this->error_text(12, $field); return false; } } } function check_text($text_val, $field, $text_len = 0, $req = "y") { if (empty($text_val)) { if ($req == "y") { $this->messages[] = $this->error_text(1, $field); return false; } else { return true; // in case only the text length is validated } } else { if ($text_len > 0) { if (strlen($text_val) > $text_len) { $this->messages[] = $this->error_text(13, $field); return false; } else { return true; } } else { return true; } } } function check_check_box($req_value, $field, $element) { if (empty($_REQUEST[$element])) { $this->messages[] = $this->error_text(12, $field); return false; } else { if (!empty($req_value)) { if ($req_value != $_REQUEST[$element]) { $this->messages[] = $this->error_text(12, $field); return false; } else { return true; } } else { return true; } } } function check_decimal($dec_val, $field, $decimals = 2, $req = "n") { if ($dec_val == "") { if ($req == "y") { $this->messages[] = $this->error_text(1, $field); return false; } else { return true; } } else { $pattern = "/^[-]*[0-9][0-9]*\.[0-9]{".$decimals."}$/"; if (preg_match($pattern, $dec_val)) { return true; } else { $this->messages[] = $this->error_text(12, $field); return false; } } } function check_date($date, $field, $version = "us", $req = "n") { if ($date == "") { if ($req == "y") { $this->messages[] = $this->error_text(1, $field); return false; } else { return true; } } else { $date_parts = explode("-", $date); $month = $date_parts[1]; if ($version == "eu") { $pattern = "/^(0?[1-9]|[1-2][0-9]|3[0-1])[-](0?[1-9]|1[0-2])[-](19|20)[0-9]{2}$/"; $day = $date_parts[0]; $year = $date_parts[2]; } else { $pattern = "/^(19|20)[0-9]{2}[-](0?[1-9]|1[0-2])[-](0?[1-9]|[1-2][0-9]|3[0-1])$/"; $day = $date_parts[2]; $year = $date_parts[0]; } if (preg_match($pattern, $date) && checkdate(intval($month), intval($day), $year)) { return true; } else { $this->messages[] = $this->error_text(10, $field); return false; } } } function check_email($mail_address, $field, $req = "y") { if ($mail_address == "") { if ($req == "y") { $this->messages[] = $this->error_text(1, $field); return false; } else { return true; } } else { if (preg_match("/^[0-9a-z]+(([\.\-_])[0-9a-z]+)*@[0-9a-z]+(([\.\-])[0-9a-z-]+)*\.[a-z]{2,4}$/i", $mail_address)) { return true; } else { $this->messages[] = $this->error_text(11, $field); return false; } } } function check_html_tags($value, $field) { if (preg_match("/<[a-z]+(\s[a-z]{2,}=['\"]?(.*)['\"]?)+(\s?\/)?>(<\/[a-z]>)?/i", $value)) { $this->messages[] = $this->error_text(15, $field); return false; } else { return true; } } function create_msg($break_elem = "<br />") { $the_msg = ""; krsort($this->messages); // modified in 1.35 reset($this->messages); foreach ($this->messages as $value) { $the_msg .= $value.$break_elem."\n"; } return $the_msg; } function error_text($num, $fieldname = "") { $fieldname = str_replace("_", " ", $fieldname); switch ($this->language) { case "fr": $msg[0] = "SVP corriger les prochaines erreurs:"; $msg[1] = "Le champ <b>".$fieldname."</b> est vide."; $msg[10] = "Le date dans le champ <b>".$fieldname."</b> n\'est pas valide."; $msg[11] = "L'addresse d'email <b>".$fieldname."</b> n\'est pas valide."; $msg[12] = "Le valeur dans le champ <b>".$fieldname."</b> n\'est pas valide."; $msg[13] = "Le texte dans le champ <b>".$fieldname."</b> est trop long."; $msg[14] = "L'addresse de l\'internet dans le champ <b>".$fieldname."</b> n\'est pas valide."; $msg[15] = "Le champ <b>".$fieldname."</b> contient l\'HTML. Ce n\'est pas permit"; break; default: $msg[0] = "Please correct the following error(s):"; $msg[1] = "The field <b>".$fieldname."</b> is empty."; $msg[10] = "The date in field <b>".$fieldname."</b> is not valid."; $msg[11] = "The e-mail address in field <b>".$fieldname."</b> is not valid."; $msg[12] = "The value in field <b>".$fieldname."</b> is not valid."; $msg[13] = "The text in field <b>".$fieldname."</b> is too long."; $msg[14] = "The url in field <b>".$fieldname."</b> is not valid."; $msg[15] = "There is html code in field <b>".$fieldname."</b>, this is not allowed."; } return $msg[$num]; } } ?> Quote Link to comment Share on other sites More sharing options...
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