We will use the SimpleXMLElement function to operate xml files in php. Let's take a look at the usage of SimpleXMLElement.
The SimpleXML function allows you to convert XML into objects.
This object can be processed by using a common attribute selector or array iterator, just like any other object.
Example
Xml document format
| The code is as follows: |
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<? Php
Error_reporting (E_ALL ^ E_NOTICE );
$ Op = $ _ GET ['OP'];
$ Op | $ op = 'list '; $ Filename = 'guestbook. XML ';
If (is_file ($ filename )){
$ Gb = simplexml_load_file ($ filename );
} Else {
$ Gb = new SimpleXMLElement ("<? Xml version = '1. 0' encoding = 'utf-8'?> <Guestbook> </guestbook> ");
}
If ($ op = 'list '){
Header ("Content-Type: text/html; charset = utf-8 ");
If (is_object ($ gb )){
Echo "<table> ";
Echo "<tr> <th> ID </th> <th> User </th> <th> title </th> <th> content </th> <th> time </th> <th> IP </th> </tr> ";
Foreach ($ gb-> item as $ v ){
Echo "<tr> ";
Echo "<td> ". htmlspecialchars ($ v-> id ). "</td> <td> ". htmlspecialchars ($ v-> user ). "</td> <td> ". htmlspecialchars ($ v-> title ). "</td> <td> ". htmlspecialchars ($ v-> content ). "</td> <td> ". date ("Y-m-d H: I", intval ($ v-> time )). "</td> <td> ". htmlspecialchars ($ v-> ip ). "</td> ";
}
Echo '<table> ';
}
Echo "<div> <a href = 'guestbook. php? Op = add'> add </a> </div> ";
} Elseif ($ op = 'save '){
If (@ $ _ POST ['user']) {
$ User = $ _ POST ['user'];
$ Title = $ _ POST ['title'];
$ Content = $ _ POST ['content']; /*
$ Id = @ count ($ gb-> item );
$ Nextid = $ id + 1;
*/
$ Nextid = 1;
Foreach ($ gb-> item as $ v ){
$ Idarr [] = (int) $ v-> id;
}
$ Nextid = max ($ idarr) + 1;
$ Item = $ gb-> addChild ('ITEM ');
$ Item-> addChild ("id", $ nextid );
$ Item-> addChild ('user', $ user );
$ Item-> addChild ('title', $ title );
$ Item-> addChild ('content', $ content );
$ Item-> addChild ('time', time ());
$ Item-> addChild ('IP', $ _ SERVER ['remote _ ADDR ']);
$ Gb-> asXML ($ filename );
// Jump page, middle page
Header ("Location: guestbook. php? Op = list ");
Die;
}
} Elseif ($ op = 'ADD '){
?>
<! Doctype html public "-// W3C // dtd html 4.01 Transitional // EN" "http://www.w3.org/TR/html4/loose.dtd">
<Html lang = "en">
<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8">
<Title> Document </title>
</Head>
<Body>
<Form action = "guestbook. php? Op = save "method =" post ">
<Div> user: <input type = "text" name = "user"> </div>
<Div> title: <input type = "text" name = "title"> </div>
<Div> message: <textarea name = "content" id = "" cols = "30" rows = "10"> </textarea> </div>
<Div> <input type = "submit" value = "submit message"> </div>
</Form>
</Body>
</Html>
<? Php
}
?> |
