PHP MySQL - How easy way to update the database when one or more fields value changed -


i have little problem on database update activity.

case study:

i created form php editing, , perform queries retrieve value of record wants updated. excerpts of script:

<?php   $row = mysql_fetch_assoc(mysql_query("select id, field_1, field_2 mytable id = $editid")); ?>   ...  <form action="" method="post">   field 1 <input type = "text" name = "f1v" value = "<? php echo $ row ['field_1'];?>" />   field 2 <input type = "text" name = "f2v" value = "<? php echo $ row ['field_2'];?>" />   <input type="submit" /> </form>  .... // when form posted  if ($_post) {    $f1v = $ _post['f1v'];    $f2v = $ _post['f2v'];     mysql_query("update mytable set field_1 = '$f1v', field_2 = '$f2v' id = $editid") or die ();     // redirect form }

in case want when form submited, there activities check whether there change in 1 or more fields values. logic approximately this:

if ($ _post) {         // compare    if submitted value different existing value in record    {       updated record    }    else    {       not update record    }            // redirect form }

do have easy way it? thank help.

don't bother checking. make sure entry valid , throw in.


Comments

Post a Comment

Popular posts from this blog

java - Play! framework 2.0: How to display multiple image? -

i need display gallery of photos. here template: @(photos: list[photo]) @title = { <bold>gallery</bold> } @main(title,"photo"){ <ul class="thumbnails"> @for(photo <- photos) { <li class="span3"> <a href="#" class="thumbnail"> <img src="@photo.path" alt=""> </a> </li> } </ul> } and here controller method: public static result getphotos() { return ok(views.html.photo.gallery.render(photo.get())); } and here photo bean : @entity public class photo extends model { @id public long id; @required public string label; public string path; public photo(string path, string label) { this.path = path; this.label = label; } private static finder<long, photo> find = new finder<long, photo>( long.class, photo.class); public static list<phot...
Read more

gmail - Is there any documentation for read-only access to the Google Contacts API? -

i want read-only access user's google contacts. there stackoverflow member wanted this, , received following answer : yes, there is, use https://www.googleapis.com/auth/contacts.readonly scope , "view contacts". this exchange reference read-only access google contacts can find using google. simply using access token obtained attempt read usual google contacts api (i.e. https://www.google.com/m8/feeds ) fails insufficient permissions. similarly, using google contacts api on new target fails 404 errors (for example https://www.googleapis.com/auth/contacts.readonly/default/full ). is there documentation anywhere on how use api, or permissible way access google contacts api full read-write access?
Read more

php - Controller/JToolBar not working in Joomla 2.5 -

relevant code: jtoolbarhelper::custom('savecategories', 'save', '', 'save', false, false); ... <input type="hidden" name="controller" value="easyblogcontroller"> according can dig docs , own previous questions, should call savecategories() function in easyblogcontroller . i've tried setting value easyblog , easyblog.php (file name) current easyblogcontroller (class name). clicking on save button refreshes page. not redirect, echo or var_dump test code put in savecategories() function. var_dump ing jrequest::getvar('controller') , 'task' return correct values. creating controller object , using $controller->execute('task'); works. the values going depend on location of controller trying call, , have couple options here. typically there controller in base folder of component (likely components/com_easyblog) in file called controller.php , class name inside ...
Read more