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PHP-Verify Name, e-mail, and URL

Source: Internet
Author: User
Tags php form php form validation
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The following is the source code: 

<html><head><style> . Error{color:#FF0000;}   
     Style
 > 
     Head
 ><body>
    //define variables and set to empty values$NAMEERR=$EMAILERR=$GENDERERR=$WEBSITEERR="";$name=$email=$gender=$comment=$website="";if($_server["Request_method"] =="POST"){if(Empty($_post["Name"]))     {$NAMEERR="Name is required";}Else{$name= Test_input ($_post["Name"]);//Check if name only contains letters and whitespaceif(!preg_match ("/^[a-za-z]*$/",$name))       {$NAMEERR="Only letters and white space allowed"; }     }if(Empty($_post["Email"]))     {$EMAILERR="Email is required";}Else{$email= Test_input ($_post["Email"]);//Check if e-mail address syntax is validif(!preg_match ("/([\w\-]+\@[\w\-]+\.[ \w\-]+)/",$email))       {$EMAILERR="Invalid email format"; }     }if(Empty($_post["website"]))     {$website="";}Else{$website= Test_input ($_post["website"]);//Check if URL address syntax is valid (this regular expression also allows dashes in the URL)if(!preg_match ("/\b (?:(?: https?| FTP): \/\/|www\.) [-a-z0-9+&@#\/%?=~_|!:,.;] *[-a-z0-9+&@#\/%=~_|] /I ",$website))       {$WEBSITEERR="Invalid URL"; }     }if(Empty($_post["comment"]))     {$comment="";}Else{$comment= Test_input ($_post["comment"]);}if(Empty($_post["Gender"]))     {$GENDERERR="Gender is required";}Else{$gender= Test_input ($_post["Gender"]);}} functiontest_input($data){$data= Trim ($data);$data= Stripslashes ($data);$data= Htmlspecialchars ($data);return$data;}?><h2>PHP Form Validation Example 
      H2
 ><p><spanclass="error">* Required field. 
     span
 > 
     P
 ><formMethod="POST"Action="
 
      php_self "]);? >"> Name:<inputtype="text"name="name"><spanclass="error">*  
       echo$nameErr;? >
   
       span
  ><br><br>E-Mail:<inputtype="text"name="Email"><spanclass="error">*  
       echo$emailErr;? >
   
       span
  ><br><br>Website:<inputtype="text"name="website"><spanclass="error">  
       echo$websiteErr;? >
   
       span
  ><br><br>Comment:<textareaname="comment"rows="5"cols= "> " 
      textarea
 ><br><br>Gender:<inputtype="Radio"name="Gender"value ="female">Female<inputtype="Radio"name="Gender"value ="Male">Male<spanclass="error">*  
      echo$genderErr;? >
   
      span
  ><br><br><inputtype="Submit"name="Submit"value ="Submit"> 
     Form
 >
  
     Echo "
Your Input:
"; Echo $name; Echo "
"; Echo $email; Echo "
"; Echo $website; Echo "
"; Echo $comment; Echo "
"; Echo $gender; ?>   
      body
  > 
     HTML
 >

The above describes PHP-verify Name, e-mail, and URL, including the aspects of the content, want to be interested in the PHP tutorial friends helpful.

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