[英]Trying to modify a file with PHP
The function remove_tags has to go into the file and remove </channel></rss>
. 函数remove_tags必须进入文件并删除
</channel></rss>
。 However I can't seem to get it to work without overwriting the whole file. 但是,如果不覆盖整个文件,我似乎无法工作。
<html><body><?php
$file_name = "rss.xml";
if (!file_exists($file_name)) {
initialize_xml($file_name);
}
remove_tags($file_name);
write_content($file_name);
close_tags($file_name);
finish();
function initialize_xml($name) {
$rss = fopen($name, 'w+') or die('can\'t open file_init');
fwrite($rss, "<?xml version=\"1.0\" ?>\n");
fwrite($rss, "<rss version=\"2.0\">\n");
fwrite($rss, "<channel>\n");
fwrite($rss, "<title>CBS IT Update Feed</title>\n");
fwrite($rss, "<description>This feed will keep users up to date on IT issues that may arise</description>\n");
fwrite($rss, "<link>http://google.com</link>\n");
fwrite($rss, "<managingEditor>max.mackie@blood.ca</managingEditor>\n");
fwrite($rss, "<webMaster>max.mackie@blood.ca</webMaster>\n\n");
fwrite($rss, "</channel></rss>");
fclose($rss);
}
function write_content($name) {
$rss = fopen($name, 'a') or die('can\'t open file_write');
fwrite($rss, "<item>\n");
fwrite($rss, "<title>");
fwrite($rss, $_POST['title']);
fwrite($rss, "</title>\n");
fwrite($rss, "<description><![CDATA[");
fwrite($rss, $_POST['desc']);
fwrite($rss, "]]></description>\n");
fwrite($rss, "<date>");
$today = getdate();
$timestamp_format = $today['weekday'] . ' ' . $today['month'] . ' ' . $today['mday'] . ' ' . $today['hours'] . ' ' . $today['minutes'] . ' ' . $today['seconds'];
fwrite($rss, $timestamp_format);
fwrite($rss, "</date>\n");
fwrite($rss, "</item>\n\n");
fclose($rss);
}
function close_tags($name) {
$rss = fopen($name, 'a') or die('can\'t open file_close');
fwrite($rss, "</channel></rss>");
fclose($rss);
}
function remove_tags($name) {
$lines = file_get_contents('$name');
str_replace("</channel></rss>", " ", $lines);
$rss = fopen($name, 'w') or die('can\'t open file_remove');
fwrite($rss, $lines);
}
function finish() {
echo "The article <i> ";
echo $_POST['title'];
echo "</i> has been added to the feed.<br>";
echo "<a href=\"index.html\">Go Back</a> or <a href=\"rss.xml\">View the Feed</a>";
}
?>
</body></html>
According to the docs on str_replace , your str_replace line should be: 根据str_replace上的文档 ,您的str_replace行应该是:
$lines = str_replace("</channel></rss>", " ", $lines);
Also, your file_get_contents call in remove_tags is reading a non existant file because of quotes (which is why $lines is empty when you write it back to the file). 另外,你的remove_tags中的file_get_contents调用是因为引号而读取一个不存在的文件(这就是当你把它写回文件时$ lines为空的原因)。 That line should look like so:
那条线应该是这样的:
$lines = file_get_contents($name);
you need to replace 你需要更换
str_replace("</channel></rss>", " ", $lines);
with 同
$lines = str_replace("</channel></rss>", " ", $lines);
in the remove_tags function 在remove_tags函数中
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.