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Hello, I would like to solve form problem. Here is my code: /************************** Step 1: Select Cell************************************/ if(isset($_POST['SmartPhone'])) $checked1=$_POST['SmartPhone']; $form->add_checkbox('SmartPhone','SmartPhone',$checked1); if(isset($_POST['Apple'])) $checked2=$_POST['Apple']; $form->add_checkbox('Apple','Apple',$checked2); /************************** Step 2: Select Model************************************/ if($_POST['SmartPhone']==false and $_POST['Apple']==false) { $this->add(new error('<span style="color:red">Select your cell..!!</span>')); $this->step1(); return; } if(isset($_POST['S4'])) $tech2=$_POST['S4']; $form->add_checkbox('S4','S4',$tech2); if(isset($_POST['iPhone 5'])) $tech3=$_POST['iPhone 5']; $form->add_checkbox('iPhone_5','iPhone 5',$tech3); if(isset($_POST['iPhone 5s'])) $tech1=$_POST['iPhone 5s']; $form->add_checkbox('iPhone_5s','iPhone 5s',$tech1); //In addition, i want to know how to put "Select All" button here // in order to SELECT ALL MODELs: S4, iPhone 5, iPhone_5s /************************** Step 3: File Generation************************************/ if($_POST['S4']==false and $_POST['iPhone_5']==false and $_POST['iPhone_5s']==false) { $this->add(new error('<span style="color:red">Please enter your model..!</span>')); $this->step2(); return; } $date = date('Y-m-d_H-i-s'); // Filename should be like this format "cell_datetime.xml" // For example: SmartPhone_20130910183023.xml or Apple_20130910183023.xml // Any idea how to create such filename?? Thanks for your time.