PHP reading RSS (Feed) simple instance _ PHP Tutorial

PHP reads a simple RSS (Feed) instance. Recently, I am working on blogs, but it is troublesome to synchronize various blogs. Fortunately, every blog has its own RSS aggregation system, which can be used to implement synchronous blog calling, so I started to use RSS to get a blog recently, but it is troublesome to synchronize various blogs. Fortunately, every blog has its own RSS aggregation system, which can be used for synchronous blog calling, so I started to use RSS to implement simultaneous blog publishing. here I will study how to read RSS in PHP.

RSS is written in XML, and XML is a data storage format. There are three methods for PHP to read XML data: using XML parsing functions, DOM modules, and regular expressions, the most direct method is to directly parse XML and obtain the data in XML.

The following is the parsing code:

The code is as follows:

Error_reporting (E_ALL ^ E_NOTICE );

$ Rssfeed = "feed. xml ";
Header ('content-Type: text/html; charset = UTF-8 ');

$ Buff = "";
// Open the rss address and read
$ Fp = fopen ($ rssfeed, "r") or die ("can not open $ rssfeed ");
While (! Feof ($ fp )){
$ Buff. = fgets ($ fp, 4096 );
}
// Close the file
Fclose ($ fp );

// Create an XML parser
$ Parser = xml_parser_create ();
// Xml_parser_set_option -- set options for specified XML parsing
Xml_parser_set_option ($ parser, XML_OPTION_SKIP_WHITE, 1 );
// Xml_parse_pai_struct -- parse XML data to the array $ values
Xml_parse_into_struct ($ parser, $ buff, $ values, $ idx );
// Xml_parser_free -- release the specified XML parser
Xml_parser_free ($ parser );

Foreach ($ values as $ val ){
$ Tag = $ val ["tag"];
$ Type = $ val ["type"];
$ Value = $ val ["value"];
// Convert tags to lowercase
$ Tag = strtolower ($ tag );

If ($ tag = "item" & $ type = "open "){
$ Is_item = 1;
} Else if ($ tag = "item" & $ type = "close "){
// Construct the output string
Echo "". $ title ."
";
// Echo $ content ."
";
$ Is_item = 0;
}
// Read only the content in the item label
If ($ is_item = 1 ){
If ($ tag = "title") {$ title = $ value ;}
If ($ tag = "link") {$ link = $ value ;}
If ($ tag = "content: encoded") {$ content = $ value ;}
}
}
?>

The following shows the effect of using this program to read the feed:

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