嘗試使用PHP修改文件
[英]Trying to modify a file with PHP
問題描述
函數remove_tags必須進入文件並刪除</channel></rss> 。 但是，如果不覆蓋整個文件，我似乎無法工作。
<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>
2 個解決方案
解決方案1
2 已采納 2011-05-13 19:53:32
根據str_replace上的文檔 ，您的str_replace行應該是：
$lines = str_replace("</channel></rss>", " ", $lines);
另外，你的remove_tags中的file_get_contents調用是因為引號而讀取一個不存在的文件（這就是當你把它寫回文件時$ lines為空的原因）。 那條線應該是這樣的：
$lines = file_get_contents($name);
解決方案2
2 2011-05-13 19:54:51
你需要更換
str_replace("</channel></rss>", " ", $lines);
同
$lines = str_replace("</channel></rss>", " ", $lines);
在remove_tags函數中
修改PHP中文件的內容
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