PHP Basic Tutorial--2 Creating templates, working with forms

One. Create a template:

Copy the frequently occurring parts of the page into an HTML or PHP file, which is introduced in the original page with the Require ()/include () function.

Example:

SOURCE HTML:

Copy of the head: header.html:

Tail of copy: footer.html:

Crafting Template: ws.php

<?phprequire (' header.html ');? ><form action= "handle.php" method= "POST" > <p> name:<select name= "title" > <option value= "Mr" >Mr</option> </select> <input type= "text" name= "name" size= "/></p> <input type=" Submit "value=" Send "></form><?phprequire (' footer.html ');? >

Second, processing the form-let a page simultaneously display and process the form

To use a conditional statement:

if (Form submit) {process Form}

else {Show Form}

Example: Simple user name-password authentication

Input: User name: YF Password: 123456

Display: Login Successful

Drawing:

Code: ws.php (where header.html,footer.html refers to the template above):

<?phpdefine (' TITLE ', ' Login '), require (' header.html '), if (Isset ($_post[' submitted ')) {if (!empty ' name ' ]) && (!empty ($_post[' password '))) {if ((Strtolower ($_post[' name ')] = = ' YF ') && ($_post[' password ') = = ' 123456 ')) {//Name and password is correct.print ' <p> logged in!</p> ';} else {print ' <p> name or password is worry!</p> ';}} else {print ' <p> make sure you enter both name and Password!</p> ';}} else {print ' <form action= "ws.php" method= "POST" >  <p> name:<input type= "text" name= "Name"  size = "/></p>"  <p>password:<input type= "Password" name= "Password" "size="/></p> <input type= "Submit" value= "send" > <input type= "hidden" name= "submitted" value= "true"/></form> ';} Require (' footer.html ');? >

PHP Basic Tutorial--2 Creating templates, working with forms