Rosith Posted February 25, 2020 Share Posted February 25, 2020 Hi there. My problem is quite simple, but carries lots of questions of why the hell is this happening. I'm new at PHP but I'm familiar with the syntax, since It's been 3 years since I code in C, 1 in Java and half year in JS (with HTML and CSS of course). I was creating a page where I could validate a HTML form using PHP script, it was going everything allright, until I couldn't use the data that was going to the $_POST array. I tested it on some other file and It was like the server just didn't allowed me to do it so. I searched around on internet and I found the print_r() function, which shows the data as an associative array in $_POST, like this: array(KeyName => ValueName). Check the code and please, help me find why is this happening. I'm brazillian and all I know about english came from netflix, so i'm sorry if I wrote anything wrong. Thanks S&Z <!DOCTYPE html> <html lang = "pt-br" > <head> <title> Formulário </title> <meta charset="utf-8"> </head> <body> <form method = "POST" action = "<?php htmlspecialchars($_SERVER["PHP_SELF"]);?>" autocomplete = "off"> Nome: <br> <input type = "text" name = "Name" placeholder = "Ex: Guilherme" required autofocus> <?php if($_SERVER["REQUEST_METHOD"] == $_POST){ echo $_POST["Name"]; } ?> <br><br> <input type = "submit" value = "Enviar"> </form> <?php print_r($_POST); ?> </body> </html> Quote Link to comment https://forums.phpfreaks.com/topic/310131-_post-wont-work-form-validation-phphtml/ Share on other sites More sharing options...
kicken Posted February 25, 2020 Share Posted February 25, 2020 22 minutes ago, Rosith said: $_SERVER["REQUEST_METHOD"] == $_POST $_SERVER['REQUEST_METHOD'] is a string value indicating what HTTP verb was used. To check for a POST request then you need to compare to the string "POST" not the $_POST array. if ($_SERVER['REQUEST_METHOD'] === 'POST'){ //... } Quote Link to comment https://forums.phpfreaks.com/topic/310131-_post-wont-work-form-validation-phphtml/#findComment-1574899 Share on other sites More sharing options...
Barand Posted February 25, 2020 Share Posted February 25, 2020 Also, change the order of the code in your page, putting the php section first. Code flow should be something like this if POST data exists Validate data storing error messages if no errors do updates header("location: #") // reload page exit end if end if if GET data process GET data endif any other code necessary for building page e.g. menus !DOCTYPE html html output any validation error messages form form fields end form end html Quote Link to comment https://forums.phpfreaks.com/topic/310131-_post-wont-work-form-validation-phphtml/#findComment-1574900 Share on other sites More sharing options...
maxxd Posted February 25, 2020 Share Posted February 25, 2020 In addition, leave the `action` attribute off your opening form tag. By not supplying an action the form will submit to it's own address, and I believe that $_SERVER['PHP_SELF'] can be altered or spoofed. In a similar vein, instead of checking $_SERVER['REQUEST_METHOD'], you could always check the actual variable you're about to use - that way you'll know that what you want to print actually exists. if(!empty($_POST['Name'])){ echo htmlspecialchars($_POST['Name']); } Quote Link to comment https://forums.phpfreaks.com/topic/310131-_post-wont-work-form-validation-phphtml/#findComment-1574904 Share on other sites More sharing options...
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