PHP read RSS (feed) Simple instance _php instance

Recently in the blog, but a variety of blog synchronization between the trouble, fortunately, every blog has its own RSS aggregation system, can be implemented through the RSS blog synchronization call, so their own hands with the implementation of RSS blog to publish, in which the study of PHP read RSS.

RSS is written in XML, and XML is a data storage format. There are three ways to read XML data in PHP: XML parsing functions, DOM modules, and regular expressions are most directly parsing XML directly to get the data in XML.

The following is the parsing code:

Copy Code code as follows:

<?php
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 File
Fclose ($FP);

Create an XML parser
$parser = Xml_parser_create ();
Xml_parser_set_option--option settings for specified XML parsing
Xml_parser_set_option ($parser, xml_option_skip_white,1);
Xml_parse_into_struct-parsing XML data into an array $values
Xml_parse_into_struct ($parser, $buff, $values, $IDX);
Xml_parser_free--Frees the specified XML parser
Xml_parser_free ($parser);

foreach ($values as $val) {
$tag = $val ["tag"];
$type = $val ["type"];
$value = $val ["Value"];
Label unified to lowercase
$tag = Strtolower ($tag);

if ($tag = = "Item" && $type = = "Open") {
$is _item = 1;
}else if ($tag = = "Item" && $type = = "Close") {
Constructing an output string
echo "<a href=" ". $link." "target=" _blank ">". $title. " </a>
";
echo $content. "
";
$is _item = 0;
}
Read only the contents of the item label
if ($is _item==1) {
if ($tag = = "title") {$title = $value;}
if ($tag = = "link") {$link = $value;}
if ($tag = = "content:encoded") {$content = $value;}
}
}
?>

The following is the effect of reading the feed with this program: