I have a WordPress issue and want to simply write log messages to a text file. I am aware that error_log exists, but want to have a more segregated log file for different messages.
I am using wp_filesystem->put_contents, and it DOES write to the file and succeeds, but it ONLY outputs the last call's data.
I have the following method:
public static function log_message($msg) {
error_log($msg);
require_once(ABSPATH . 'wp-admin/includes/file.php');
global $wp_filesystem;
if ( ! is_a( $wp_filesystem, 'WP_Filesystem_Base') ){
$creds = request_filesystem_credentials( site_url() );
wp_filesystem($creds);
}
$bt = debug_backtrace();
$caller = array_shift($bt);
$logStr = date("Y-m-d hh:ii A",time())." - ".$caller['file'].":".$caller['line']." - ".$msg;
$filePathStr = SRC_DIR.DIRECTORY_SEPARATOR.$logFileName;
$success = $wp_filesystem->put_contents(
$filePathStr,
$logStr,
FS_CHMOD_FILE // predefined mode settings for WP files
);
if(!$success) {
error_log("Writing to file \"".$filePathStr."\" failed.");
} else {
error_log("Writing to file \"".$filePathStr."\" succeeded.");
}
}
I call it using:
log_message("\nTest 1");
log_message("\nTest 2");
log_message("\nTest 3");
The output is ALWAYS ONLY Test 3 with the other invocations being ignored yet, their output appears in the debug.log as well as all the success messages.
Why would this be?
Looking at the WPCodex for the source code of this, it uses fwrite behind the scenes. The file is closed in this code, and I cannot use any "flush" technique.
Is there a way to figure this out?
I found that the source of WP_Filesystem uses file_put_contents (as the name does suggest), and I assumed this is for APPENDING to the file's data.
This is incorrect.
This function is to take data, and then WRITE it to the file, erasing prior data.
Mainly useful for creating resources, downloading a file, etc.
If I want to APPEND to a file, I need to use 'fwrite'.
This post describes that.
This is the example to APPEND to a file:
$filepath = '\path\to\file\';
$filename = 'out.log';
$fullpath = $filepath.$filename;
if(file_exists($fullpath)) {
$file = fopen($filepath.$filename, "a");//a for append -- could use a+ to create the file if it doesn't exist
$data = "test message";
fwrite($file, "\n". $data);
fclose($file);
} else {
error_log("The file \'".$fullpath."\' does not exist.");
}
The fopen docs describe this method and it's modes.
Related
I have a task to do in which i have to list the directories with it's files which i did, but i don't understand how to delete file or edit specific file in the directories any help will be appreciated Thanks.
<?php
error_reporting(0);
if(isset($_GET['dir']))
{
// /$path = 'E:\xampp\\'.$_GET['dir'];
$path = $_GET['dir'];
}
else
{
$path = 'E:\xampp\\';
}
if(is_dir($path))
{
$arrDir = scandir($path);
echo "<ul>";
foreach ($arrDir as $key => $value)
{
echo "<a href='http://localhost/vishrut/FileUpload/filelist.php?
dir=".$path.'/'.$value."'>".$value.'</a><br>';
}
echo "</ul>";
}
else
{
echo "<textarea>";
echo file_get_contents($path);
echo "</textarea>"."<br>";
}
?>
There are lots of PHP's functions to handle files: https://www.php.net/manual/en/ref.filesystem.php
For your needs see these:
file_get_contents to read the entire file contents
file_put_contents to write the content in a file
unlink to delete a file
So, the steps to modify a file may be:
get the complete contents with file_get_contents:
$contents = file_get_contents($filePath);
apply your edits to the $contents content:
$newContents = ...
overwrite the file content:
file_put_contents($filePath, $newContents);
To delete a file is simple:
unlink($filePath);
It's important to note that your code is subjected to injection because you don't check the user data passed with $_GET.
If your script will be used only by you it's ok, instead you must check all user input: the first rule of Web programming is NEVER TRUST YOUR USERS! Also trusted users may write wrong characters in the url and that may have unexpected results (e.g. delete the wrong file!)
Read https://www.php.net/manual/en/mongodb.security.script_injection.php
I want to open a server stored html report file on a client machine.
I want to bring back a list of all the saved reports in that folder (scandir).
This way the user can click on any of the crated reports to open them.
So id you click on a report to open it, you will need the location where the report can be opend from
This is my dilemma. Im not sure how to get a decent ip, port and folder location that the client can understand
Here bellow is what Ive been experimenting with.
Using this wont work obviously:
$path = $_SERVER['DOCUMENT_ROOT']."/reports/saved_reports/";
So I though I might try this instead.
$host= gethostname();
$ip = gethostbyname($host);
$ip = $ip.':'.$_SERVER['SERVER_PORT'];
$path = $ip."/reports/saved_reports/";
$files = scandir($path);
after the above code I loop through each file and generate a array with the name, date created and path. This is sent back to generate a list of reports in a table that the user can interact with. ( open, delete, edit)
But this fails aswell.
So im officially clueless on how to approach this.
PS. Im adding react.js as a tag, because that is my front-end and might be useful to know.
Your question may be partially answered here: https://stackoverflow.com/a/11970479/2781096
Get the file names from the specified path and hit curl or get_text() function again to save the files.
function get_text($filename) {
$fp_load = fopen("$filename", "rb");
if ( $fp_load ) {
while ( !feof($fp_load) ) {
$content .= fgets($fp_load, 8192);
}
fclose($fp_load);
return $content;
}
}
$matches = array();
// This will give you names of all the files available on the specified path.
preg_match_all("/(a href\=\")([^\?\"]*)(\")/i", get_text($ip."/reports/saved_reports/"), $matches);
foreach($matches[2] as $match) {
echo $match . '<br>';
// Again hit a cURL to download each of the reports.
}
Get list of reports:
<?php
$path = $_SERVER['DOCUMENT_ROOT']."/reports/saved_reports/";
$files = scandir($path);
foreach($files as $file){
if($file !== '.' && $file != '..'){
echo "<a href='show-report.php?name=".$file. "'>$file</a><br/>";
}
}
?>
and write second php file for showing html reports, which receives file name as GET param and echoes content of given html report.
show-report.php
<?php
$path = $_SERVER['DOCUMENT_ROOT']."/reports/saved_reports/";
if(isset($_GET['name'])){
$name = $_GET['name'];
echo file_get_contents($path.$name);
}
I have a script with a mysql query which saves a file called invoice.xml every day automatically by running a cron job. In case no data is found a no_orders.txt is saved.
I would like this file not be saved to the same folder as the script.php file is in but to a subfolder called invoices.
The renaming of the old invoice.xml is done with the following code
// rename old file
$nowshort = date("Y-m-d");
if(file_exists('invoice.xml')) {
rename('invoice.xml','invoice_'.$nowshort.'.xml');
}
The saving is done with the following code:
if($xml1 !='') {
$File = "invoice.xml";
$Handle = fopen($File, 'w');
fwrite($Handle, $xml1);
print "Data Written - ".$nowMysql;
fclose($Handle);
#print $xml;
die();
} else {
print "No new orders - ".$nowMysql;
$File = "no_orders_".$nowshort.".txt";
$Handle = fopen($File, 'w');
fclose($Handle);
die();
}
Could I please get assistance how to save this file to a subfolder. Also the renaming of the existing file would need to be within the subfolder then. I have already tried with possibilities like ../invoice/invoice.xml but unfortunately without any success.
Thank you
Just give the path of file 'invoice.xml' to $File.
Otherwise create some $Dir object which will point to Folder named 'invoice', then use accordingly
Use __DIR__ magic constant to retrieve your script.php directory, then you can append /invoice/invoice.xml .
Example if path to your script php something like this:
/var/www/path/to/script.php
$currentDir = __DIR__; //this wil return /var/www/path/to
$invoicePath = $currentDir.'/invoice/invoice.xml';
I'm making a function on WordPress to get the content of the robots.txt file. If the file doesn't exist, create it with default content. I will use it for my options page. Well, this is my code, it should work almost creating the file, but it doesn't:
function get_robots($robots_file) {
$robots_file = get_home_path() . 'robots.txt'; //The robots file.
$dir = get_home_path(); //The root directory
if(is_file($robots_file)){
$handle = fopen($robots_file, "r");
$robots_content = fread($handle, filesize($robots_file));
fclose($handle);
} else {
$default_content = "User-agent: *\nDisallow:";
chmod($dir, 0777);
$handle = fopen($robots_file, "w+");
$robots_content = fwrite($handle, $default_content);
fclose($handle);
}
chmod($dir, 0744);
return $robots_content;
}
I'm not sure if the problem is is_file, or the fopen($robots_file, "w+" (should it be "r"?) after the else. And I'm not sure about the permissions. Is the 777 needed? Is the 744 the default for the root directory of WordPress?
And I use the return to use it as variable later; I suppose the fopen is already creating the file. Am I right?
Thanks in advance.
The first thing, I would use completely different functions, you have file_put_contents() and file_get_contents() for such simple operations.
So possible simpler solution is:
function get_robots() {
$robots_file = get_home_path() . 'robots.txt'; //The robots file.
if(file_exists($robots_file)){
return file_get_contents($robots_file);
} else {
$default_content = "User-agent: *\nDisallow:";
file_put_contents($robots_file, $default_content);
return $default_content;
}
}
I don't see any point to pass $robots_file as function argument so I removed it. You should check if this code simple works.
I also don't see any reason to change $dir permissions as you showed in your code. It should be rather set manually and you definitely shouldn't change your root directory permission in such function.
EDIT
Because this function uses get_home_path() and this one is available probably only on admin panel you have to do it in different way. You may add the following code to the end of your index.php file:
function get_robots($path)
{
$robots_file = $path . DIRECTORY_SEPARATOR . 'robots.txt'; //The robots file.
if(file_exists($robots_file)){
return file_get_contents($robots_file);
} else {
$default_content = "User-agent: *\nDisallow:";
file_put_contents($robots_file, $default_content);
return $default_content;
}
}
get_robots(getcwd());
(Of course if you want, you may move get_robots() function to some other files.
However you should consider if this is the best approach. You will run this function each time your site will be viewed and it's tiny waste (in fact you will probably want to create robots.txt file just once). You could for example create robots.php file and if you want to run it you can run http://yourwordpressurl/robots.php. It's of course your call.
I want to download database table column fields as CSV in Zend Framework. Are there any ZF libraries for this?
There are other questions here on SO that addresses this specific subject, but none of them provide me enough detail. Could someone please describe in detail how to do it?
I'll assume you have a standard DbTable model for your table. Get the table information using the info() method
//the following is pseudocode and not meant to be copied directly, intended to guide
public function indexAction() {
$model = new Application_Model_DbTable_MyTable();
//This returns an array of table info
$info = $model->info();
//prepare the data so each line can be saved
$data = $info['name'] . ',' . $info['primary'];
//then write each line to the database, I usually use a function from
// a utility class or a protected function
//I would normally build an array of the data I want saved and then
//iterate over the array saving as I go.
$save = $this->_writeToFile($filename, $data);
}
//the following function is not pseudocode
protected function _writeToFile($filename, $content) {
// Let's make sure the file exists and is writable first.
if (is_writable($filename)) {
// In our example we're opening $filename in append mode.
// The file pointer is at the bottom of the file hence
// that's where $somecontent will go when we fwrite() it.
if (!$handle = fopen($filename, 'a')) {
echo "Cannot open file ($filename)";
exit;
}
// Write $somecontent to our opened file.
if (fwrite($handle, $content) === FALSE) {
echo "Cannot write to file ($filename)";
exit;
}
echo "Success, wrote ($content) to file ($filename) <br />";
//close file
fclose($handle);
} else {
echo "The file $filename is not writable";
}
}
Hope this points you in the right direction.