MachForm Community Forums Topic: regular expressions

MachForm Community Forums Topic: regular expressions https://www.machform.com/forums/ MachForm Community Forums Topic: regular expressions en Wed, 06 May 2026 17:49:28 +0000 rafalsak on "regular expressions" https://www.machform.com/forums/topic/regular-expressions#post-18656 Thu, 04 Jul 2013 17:57:45 +0000 rafalsak 18656@https://www.machform.com/forums/ Hi, I've a problem with my new validation. Here is what I've done: In the file: common_validator.php, I included the code: <pre><code>function mf_validate_indeksy($value){ global $mf_lang; $error_message = $mf_lang['val_indeksy']; if(!empty($value[0])){ $regex = '/^([0-9]*[\n]?)*$/'; $result = preg_match($regex, $value[0]); if(empty($result)){ return sprintf($error_message,'%s',$value[0]); }else{ return true; } }else{ return true; } }</code></pre> In the file: post-functions.php, I included the code: <pre><code>if ($form_id == 4 && $element_id == 17){ $rules[$element_name]['indeksy'] = true; }</code></pre> after the code: <pre><code>elseif ('textarea' == $element_type){ //Paragraph if($element_info[$element_id]['is_required']){ $rules[$element_name]['required'] = true; }</code></pre> I expected the result: the filed of type 'Paragaph' and the id = 17 included in the form_id =4, should only accept digits and crl\lf (break of line). I mean there is only allowed list of numbers. After this changes, there is no result I expected. Please help me ... yuniar on "regular expressions" https://www.machform.com/forums/topic/regular-expressions#post-1116 Tue, 18 Mar 2008 09:31:58 +0000 yuniar 1116@https://www.machform.com/forums/ Sounds great :-) dgrebb on "regular expressions" https://www.machform.com/forums/topic/regular-expressions#post-1103 Mon, 17 Mar 2008 21:44:33 +0000 dgrebb 1103@https://www.machform.com/forums/ Thanks so much yuniar. The problem was indeed a bad regex, and I was editing the wrong code, inside <code>process_form_update()</code>, instead of the code inside <code>process_form()</code>. Again I commend your work on this project. It will make life much easier on my end. Cheers! yuniar on "regular expressions" https://www.machform.com/forums/topic/regular-expressions#post-1077 Sat, 15 Mar 2008 07:21:07 +0000 yuniar 1077@https://www.machform.com/forums/ I can't seem to make your new regex working either. Let's try using this alternative regex: <pre><code>//validation to disallow any common html function validate_fullname($value){ $error_message = VAL_FULLNAME; if(!preg_match("/^[a-zA-Z0-9 ]*$/",$value[0])){ return sprintf($error_message,'%s',$value[0]); }else{ return true; } }</code></pre> <code></code> If you still having trouble, I'll mail you the code. Also, the modification in post-functions.php file, make sure you modify the right code inside process_form() function, not inside process_form_update(). Those two function are similar. dgrebb on "regular expressions" https://www.machform.com/forums/topic/regular-expressions#post-1071 Fri, 14 Mar 2008 21:22:12 +0000 dgrebb 1071@https://www.machform.com/forums/ The regex was indeed flawed, however the PHP still seems to fail. Here is my new regex: <code>(\<(/?[^\>]+)\>)</code> I am attempting check a field for any HTML characters, and return the <code>$errormessage</code> I've added: <code>define('VAL_FULLNAME','This field may only consist of a-z 0-9 and spaces.');</code> Thanks so much for the quick response :) yuniar on "regular expressions" https://www.machform.com/forums/topic/regular-expressions#post-1067 Fri, 14 Mar 2008 08:18:55 +0000 yuniar 1067@https://www.machform.com/forums/ Hmm..it seem you have put it in the right places. However, what is this regex do? <code>preg_match('\<|\>|www|\.',$value[0])</code> <code></code> I tested with a simple code: <pre><code>$value[0] = "test"; preg_match('\<|\>|www|\.',$value[0],$matches); print_r($matches);</code></pre> <code></code> and I get "Warning: Delimiter must not be alphanumeric or backslash" I think there is some glitch with the regex dgrebb on "regular expressions" https://www.machform.com/forums/topic/regular-expressions#post-1060 Fri, 14 Mar 2008 02:57:21 +0000 dgrebb 1060@https://www.machform.com/forums/ I cannot figure out how to create an additional validator. In includes/common-validator.php I added the following code: <pre><code>//validation to disallow any common html function validate_fullname($value){ $error_message = VAL_FULLNAME; if(preg_match('\<|\>|www|\.',$value[0])){ return sprintf($error_message,'%s',$value[0]); }else{ return true; } }</code></pre> directly below this code: <pre><code>//validation to allow only a-z 0-9 and underscores function validate_username($value){ $error_message = VAL_USERNAME; if(!preg_match("/^[a-z0-9][\w]*$/i",$value[0])){ return sprintf($error_message,'%s',$value[0]); }else{ return true; } }</code></pre> In /includes/post-functions.php, I added: <pre><code>$rules[$element_name]['fullname'] = true; $rules[$element_name_2]['fullname'] = true;</code></pre> directly below <pre><code>}elseif ('simple_name' == $element_type){ //Simple Name if(is_array($processed_elements) && in_array($element_name,$processed_elements)){ continue; } //compound element, grab the other element, 2 elements total $element_name_2 = substr($element_name,0,-1).'2'; $processed_elements[] = $element_name_2; //put this element into array so that it won't be processed on next loop if($element_info[$element_id]['is_required']){ $rules[$element_name]['required'] = true; $rules[$element_name_2]['required'] = true; }</code></pre> and also added: <pre><code>$rules[$element_name_2]['fullname'] = true; $rules[$element_name_3]['fullname'] = true;</code></pre> directly below: <pre><code>}elseif ('name' == $element_type){ //Name - Extended if(is_array($processed_elements) && in_array($element_name,$processed_elements)){ continue; } //compound element, grab the other element, 4 elements total //only element no 2&3 matters (first and last name) $element_name_2 = substr($element_name,0,-1).'2'; $element_name_3 = substr($element_name,0,-1).'3'; $element_name_4 = substr($element_name,0,-1).'4'; $processed_elements[] = $element_name_2; //put this element into array so that it won't be processed next $processed_elements[] = $element_name_3; $processed_elements[] = $element_name_4; if($element_info[$element_id]['is_required']){ $rules[$element_name_2]['required'] = true; $rules[$element_name_3]['required'] = true; }</code></pre> What am I missing? Any help is much appreciated :) yuniar on "regular expressions" https://www.machform.com/forums/topic/regular-expressions#post-679 Wed, 30 Jan 2008 10:34:14 +0000 yuniar 679@https://www.machform.com/forums/ Go to includes/common-validator.php file and adjust the validate_required() function to use your regex. Few functions there, such as validate_email() and validate_phone() are using regex to do validation, you might want to take a look at those for samples plugging in a regex. Regarding the space, a space is considered an input too. I decided to let it go instead of trimming it. arnaud404 on "regular expressions" https://www.machform.com/forums/topic/regular-expressions#post-673 Wed, 30 Jan 2008 00:22:45 +0000 arnaud404 673@https://www.machform.com/forums/ I have also noticed that a simple 'espace' broke the "required" validation of a field arnaud404 on "regular expressions" https://www.machform.com/forums/topic/regular-expressions#post-671 Tue, 29 Jan 2008 23:24:05 +0000 arnaud404 671@https://www.machform.com/forums/ How deep I have to go to change the "required" option by a "use a regex" which will bring me a lot more into the validation & input validation ? (for example, for the number field, use "\d{4}" instead of the basic "required" option) this is the same post as my prévious one called "regex?", but the forum seems to be broken with that keyword in the title (sorry)