PHP generates XML data
1) Assemble string: simple, easy to understand, commonly used
2) using System classes
Such as:
DomDocument
The following details describe the assembled string to generate XML data
XML data requires 1. Header Information <?xml
2. Root node
3. Data
<?php
Class response{
/**
* Output communication data in JSON mode
* @param integer $code status code
* @param string $message tip information
* @param array $data data
*return string return value is JSON
*/
Static methods, constructing JSON data
public static function XML () {
$xml = "<?xml version= ' 1.0 ' encoding= ' UTF-8 '?>";
$xml. = "<root>";//Use a link to the front string, this is the root node
$xml. = "<code>200</code>";
$xml. = "<message> Data return success </message>";
$xml. = "<data>";
$xml. = "<id>1</id>";
$xml. = "<name>david</name>";
$xml. = "</data>";
$xml. = "</root>";
Echo $xml;
}
}
Response::xml ();
?>
Run Web page display:
200 Data Return Success 1david
View Source code:
<?xml version= ' 1.0 ' encoding= ' UTF-8 '?><root><code>200</code><message>
Data returned successfully
</message><data><id>1</id><name>david</name></data></root>
When viewing the source code in the browser, the data is close together, not intuitive. So each data output is followed by a newline.
$xml = "<?xml version= ' 1.0 ' encoding= ' UTF-8 '? >\n";
$xml. = "<root>\n";//Use a link to the front string, this is the root node
$xml. = "<code>200</code>\n";
$xml. = "<message> Data return success </message>\n";
$xml. = "<data>\n";
$xml. = "<id>1</id>\n";
$xml. = "<name>david</name>\n";
$xml. = "</data>\n";
$xml. = "</root>\n";
After modification:
<?xml version= ' 1.0 ' encoding= ' UTF-8 '?>
<root>
<code>200</code>
<message> Data Return Success </message>
<data>
<id>1</id>
<name>david</name>
</data>
</root>
By default: XML tags are not displayed in browser pages, only when viewing source code
Because the HTTP response header information is the HTML type by default. Default: Header ("content-
Type:text/html ");
1.png
If you need to display an XML tag on a page, you need to modify the content type in the response header information
Text/xml
public static function XML () {
Header ("Content-type:text/xml");
$xml = "<?xml version= ' 1.0 ' encoding= ' UTF-8 '? >\n";
$xml. = "<root>\n";//Use a link to the front string, this is the root node
$xml. = "<code>200</code>\n";
$xml. = "<message> Data return success </message>\n";
$xml. = "<data>\n";
$xml. = "<id>1</id>\n";
$xml. = "<name>david</name>\n";
$xml. = "</data>\n";
$xml. = "</root>\n";
Echo $xml;
}
PHP XML method for encapsulating interface data
Encapsulation Method:
Xmlencode ($code, $message = "", $data =array ())
Complex array parsing does not come out:
<?php
Class response{
public static function Xmlencode ($code, $message, $data =array ()) {
if (!is_numeric ($code)) {
Return ';
}
$result =array (
' Code ' = $code,
' Message ' = $message,
' Data ' = $data,
);
Header ("Content-type:text/xml");
$xml = "<?xml version= ' 1.0 ' encoding= ' UTF-8 '? >\n";
$xml. = "<root>\n";//Use a link to the front string, this is the root node
$xml. =self::xmltoencode ($result);
$xml. = "</root>\n";
Echo $xml;
}
public static function Xmltoencode ($data) {
Parse an array and assemble it into XML data
$xml = "";
foreach ($data as $key = = $value) {
$xml. = "<{$key}>";//curly braces can be identified as variables
$xml. = $value;
$xml. = "</{$key}>";
}
return $xml;
}
}
$data =array (
' id ' = 1,
' Name ' = ' David '
);
Response::xmlencode (+, ' success ', $data);
?>
Appear:
<root>
<code>200</code>
<message>success</message>
<data>Array</data>
</root>
When the Foreach loop is $value to the last data, it is not displayed, so it needs
Recursive invocation of Xmltoencode ($value)
It's about the code above.
$xml. = Is_$value; instead:
$xml. =is_array ($value)? Self::xmltoencode ($value): $value;
Results:
<root>
<code>200</code>
<message>success</message>
<data>
<id>1</id>
<name>david</name>
</data>
</root>
If the data to be encapsulated is not in key=>value form:
(A/D) automatically encapsulated into XML <0>1</0><1>2</1><2>2</2> numbers cannot be labeled so
Error
can be converted into:
<item id= "0" >1</item> form
Final version:
<?php
Class response{
/**
* Output communication data in JSON mode
* @param integer $code status code
* @param string $message tip information
* @param array $data data
*return string return value is JSON
*/
Static methods, constructing JSON data
/*public static function json ($code, $message = ", $data =array ()) {
if (!is_numeric ($code)) {
Return ';
}
$result =array (
' Code ' = $code,
' Message ' = $message,
' Data ' = $data
);
echo Json_encode ($result);
Exit
}*/
/*public static function xml () {
Header ("Content-type:text/xml");
$xml = "<?xml version= ' 1.0 ' encoding= ' UTF-8 '? >\n";
$xml. = "<root>\n";//Use a link to the front string, this is the root node
$xml. = "<code>200</code>\n";
$xml. = "<message> Data return success </message>\n";
$xml. = "<data>\n";
$xml. = "<id>1</id>\n";
$xml. = "<name>david</name>\n";
$xml. = "</data>\n";
$xml. = "</root>\n";
Echo $xml;
}*/
public static function Xmlencode ($code, $message, $data =array ()) {
if (!is_numeric ($code)) {
Return ';
}
$result =array (
' Code ' = $code,
' Message ' = $message,
' Data ' = $data,
);
Header ("Content-type:text/xml");
$xml = "<?xml version= ' 1.0 ' encoding= ' UTF-8 '? >\n";
$xml. = "<root>\n";//Use a link to the front string, this is the root node
$xml. =self::xmltoencode ($result);
$xml. = "</root>\n";
Echo $xml;
}
public static function Xmltoencode ($data) {
Parse an array and assemble it into XML data
$xml = $attr = "";
foreach ($data as $key = = $value) {
if (Is_numeric ($key)) {
$attr = "id= ' {$key} '";
$key = "Item";
}
$xml. = "<{$key} {$attr}>";//curly braces can be identified as variables
$xml. =is_array ($value)? Self::xmltoencode ($value): $value;
$xml. = "</{$key}>";
}
return $xml;
}
}
$data =array (
' id ' = 1,
' Name ' = ' David ',
' Type ' =>array (4,5,6)
);
Response::xmlencode (+, ' success ', $data);
?>
PHP encapsulated XML Data Communication interface
