php - Form validation using if array key exists -



php - Form validation using if array key exists -

here html , php code have used:

<?php require_once('include_function.php'); require_once('validation_functions.php'); $errors = array(); $message =""; if(isset($_post['submit'])){ $username = trim($_post['username']); $password = trim($_post['password']); if (array_key_exists('submit', $_post)){ } $fields_required = array("username","password"); foreach($fields_required $field){ $value = trim($_post[$field]); if(!has_presence($value)){ $errors[$field]= ucfirst($field). " cant blank"; } } } ?> <!doctype html> <html> <head> <meta charset="utf-8"> <title>single page submission</title> </head> <body> <?php echo $message;?> <?php echo form_error($errors)?> <form action="form_with_validation.php" method="post"> username<input type="text" name="username" value=""/><br/> password<input type="password" value="" name="password" /><br/> <input type="submit" name="submit" value="submit" /> </form> </body> </html>

and these functions have used

function has_presence($value){ homecoming isset($value) && $value !==""; } function form_error($errors=array()){ $output = ""; if(!empty($errors)){ $output .="<div class=\"error\">"; $output .="please prepare next errors"; $output .="<ul>"; foreach($errors $key => $field){ $output .= "<li>{$field}</li>"; } $output .="</ul>"; $output .="</div>"; } homecoming $output; }

can please guide me validate form using if array key exists error message next or below input field or other method needful

@sandeep s k can please seek 1 time below code? :

note: please include required db connection or validation files on top of script.

<?php function has_presence($value){ homecoming isset($value) && $value !==""; } function form_error($errors=array()){ $output = ""; if(!empty($errors)){ $output .="<div class=\"error\">"; $output .="please prepare next errors"; $output .="<ul>"; foreach($errors $key => $field){ $output .= "<li>{$field}</li>"; } $output .="</ul>"; $output .="</div>"; } homecoming $output; } $errors = array(); $message =""; if(isset($_post['submit'])){ $username = trim($_post['username']); $password = trim($_post['password']); if (array_key_exists('submit', $_post)){ } $fields_required = array("username","password"); foreach($fields_required $field){ $value = trim($_post[$field]); if(!has_presence($value)){ $errors[$field]= ucfirst($field). " cant blank"; } } } ?> <!doctype html> <html> <head> <meta charset="utf-8"> <title>single page submission</title> </head> <body> <?php echo $message;?> <?php if(!empty($errors)) { ?> <div class="has_errors"> <ul> <li> there errors in input. please prepare them , seek again. </li> </ul> </div> <?php } ?> <form action="index.php" method="post"> username<input type="text" name="username" value=""/> <?php if (array_key_exists('username', $errors)) { ?> <div class="has_errors"> <ul> <li> <?php print $errors['username'];?> </li> </ul> </div> <?php } ?> <br/> password<input type="password" value="" name="password" /> <?php if (array_key_exists('password', $errors)) { ?> <div class="has_errors"> <ul> <li> <?php print $errors['password'];?> </li> </ul> </div> <?php } ?> <br/> <input type="submit" name="submit" value="submit" /> </form> </body> </html>

php

Comments

Post a Comment

Popular posts from this blog

Delphi change the assembly code of a running process -

Delphi change the assembly code of a running process - i'm trying alter address 00741fa5 has push test.009e721c . alter push test.009e71c8 . procedure callback; asm force $9e71c8 end; procedure tform2.btn1click(sender: tobject); var ppid :dword; pprocess : cardinal; begin getwindowthreadprocessid(findwindow(nil,pchar('test')), @ppid); pprocess := openprocess(process_all_access, false, ppid); injectasm(pprocess, $741fa5, 10, integer(@callback), 0); end; here injectasm function (with error checking) function injectasm(process: longword; injectaddress, injectsize, codeaddress, codesize : integer): pointer; var csize, rsize : integer; replaced : array of byte; jmp : array [0..4] of byte; jmpaddress : integer; nopv : byte; : integer; nbr: ulong_ptr; begin //injectsize must equal or greater 5, because need space our //(far) jmp wwxxyyzz instruction //if there's no space, inject in place of few instructions if injectsize ...
Read more

json - Hibernate and Jackson (java.lang.IllegalStateException: Cannot call sendError() after the response has been committed) -

json - Hibernate and Jackson (java.lang.IllegalStateException: Cannot call sendError() after the response has been committed) - hello have problem hibernate , jackson. have 2 pojos @entity @table(name = "users") public class user implements serializable { static final long serialversionuid = 4235637833262722256l; @id @generatedvalue private int id; @column(name = "creation_date") private date creationdate; @column(name = "first_name") private string firstname; @column(name = "last_name") private string lastname; @version @column(name = "version") private int version; @column(name = "e_mail") private string email; @column(name = "enabled") private boolean enabled; @column(name = "login") private string login; @column(name = "password") private string password; @jsonmanagedreference("role") @onetomany(mappedby = "user", cascade = cascadetype.all,fetch = fetchtyp...
Read more

C++ 11 "class" keyword -

C++ 11 "class" keyword - i've started using c++ 11 little bit more , have few questions on special uses of class keyword. know it's used declare class, there's 2 instances have seen don't understand: method<class t>(); and class class_name *var; why precede typename keyword class in first example, , keyword pointer in sec example? that known elaborated type specifier , necessary when class name "shadowed" or "hidden" , need explicit. class t { }; // love of god don't t t; t t2; if compiler smart, give these warnings: main.cpp:15:5: error: must utilize 'class' tag refer type 't' in scope t t2; ^ class main.cpp:14:7: note: class 't' hidden non-type declaration of 't' here t t; ^ if class not defined, deed forwards declaration. for example: template <typename t> void method() { using type = typename t::value_type; } method...
Read more