html - PHP collecting user input and displaying it -
so have basic program allows collect user input , output user or in other words display in browser lets delete object onclick method. simple todo list.
my problem how collect information , display each previous information in rows on page instead of going away when browser refreshed. know ideal database i'm trying keep simple , knowledge of databases far inadequate. feel php or javascript can resolve issue not clicking me. maybe loop or while loop job not sure, use help. thanks.
<?php if (isset($_post["user"])) { $user_info = $_post["user"]; } ?> <!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>manage todos</title> </head> <body> <form action="" method="post"> <input type="text" name="user"></input> <input type="submit" value="post"> </form> <h1><a href="#" onclick="remove(this)"><?php echo $user_info;?> <?php echo $collect; ?></a></h1> </body> </html>
you should use session store previous variable in order displayed again when page refreshed.
change code below : if (isset($_post["user"])) { $_session["user_info"] = $_post["user"]; }
also change <h1> below :
<h1><a href="#" onclick="remove(this)"><?php if (isset($_session["user_info"])) echo $_session["user_info"]; ?></a></h1> or change <h1> :
<?php if (isset( $_session["user_info"])) { ?> <h1><a href="#" onclick="remove(this)"><?php echo $_session["user_info"]; ?></a></h1> <?php } ?> hopefully help.
update
sorry, forgot tell should start session first. here right code :
<?php session_start(); if (isset($_post["user"])) { $_session["user_info"] = $_post["user"]; } ?> update 2
assuming url site 015_session_variable.php.
change code :
<?php session_start(); if (isset($_post["user"])) { $_session["old_user_info"] = isset($_session["new_user_info"]) ? $_session["new_user_info"] : ""; $_session["new_user_info"] = $_post["user"]; } if (isset($_get["remove"])) { if ($_get["remove"] == "new") $_session["new_user_info"] = ""; else $_session["old_user_info"] = ""; } ?> <!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>manage todos</title> </head> <body> <form action="015_session_variable.php" method="post"> <input type="text" name="user" required></input> <input type="submit" value="post"> </form> <?php if (isset($_session["new_user_info"]) && $_session["new_user_info"] != "") { ?> <h1><a href="#" onclick="removeme('new');" title="remove me">latest user : <?php echo $_session["new_user_info"]; ?></a></h1> <?php } ?> <?php if (isset($_session["old_user_info"]) && $_session["old_user_info"] != "") { ?> <h1><a href="#" onclick="removeme('old');" title="remove me">previous user : <?php echo $_session["old_user_info"]; ?></a></h1> <?php } ?> <script> function removeme(a) { window.open('015_session_variable.php?remove=' + a, '_self'); } </script> </body> </html> now have information :
- how create session
- how store variables in session
- how modify session's variables
basically need in code. utilize them imaginable possible. luck.
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