I have a simple file.txt which needs to be over written every time I run a certain php code.
$msg ="string";
$file = 'file.txt';
$opn = file_get_contents($file);
$opn .= $msg;
file_put_contents($file, $opn);
The code works perfectly, It added the string I want it to add, but It is appending it to the former. I want it to erase it blank and then write.
I've read the manual http://php.net/manual/en/function.file-put-contents.php
I am not using the FILE_APPEND argument either.
It's a simple thing that I'm not seeing. Help me out.
EDIT:
Here is the whole code. I'm getting some data from a site. The data is in this format 12.222 AAA and I am trying to save that to a text file to easily access later.
But for some reason something does not work. The scraper works perfectly, and the file_put_contents() woks perfectly if I set the $item="string"; but it does not work when when $item is set to equal the code below. If I echo $item I get what I want.
<?php
include('simple_html_dom.php');
$html = file_get_html('http://site.com/boom');
// find the thing in the span
foreach($html->find('div') as $article) {
$item = $article->find('span', 0)->plaintext;
echo $item;
$file = 'file.txt';
$fh = fopen( 'file.txt', 'w' );
fclose($fh);
$opn = file_get_contents($file);
$opn .= $item;
file_put_contents($file, $opn);
}
?>
you are concatenating the string in $opn .= $msg;
You can use
$msg ="string";
$file = 'file.txt';
file_put_contents($file, $msg);
No need to read the data.
You're reading the contents of the file into a string variable ($opn), appending your message ($msg) to $opn, then writing $opn back to file.... the append you're doing is
$opn .= $msg;
If you want to write only $msg to the file, then use
file_put_contents($file, $msg);
<?php
$msg ="string";
$file = 'file.txt';
$fh = fopen( 'file.txt', 'w' );
fclose($fh);
$opn = file_get_contents($file);
$opn .= $msg;
file_put_contents($file, $opn);
?>
This code will do what you are looking for..:)
file_put_contents($file, $opn,FILE_APPEND);
Related
I save to file data from form:
$name = $_POST['name'];
$url = $_POST['url'];
$comm = $_POST['comm'];
$data["name"]=$name;
$data["url"]=$url;
$data["comm"]=$comm;
file_put_contents("db.txt", serialize($data));
Now, I would like to read this file record by record.
$file_handle = fopen("db.txt", "r");
while (!feof($file_handle)) {
$line = fgets($file_handle);
$arr = unserialize($line);
var_dump($arr);
}
fclose($file_handle);
But this code read only last record. How to read all file?
Replace file_put_contents("db.txt", serialize($data)); to
file_put_contents("db.txt", PHP_EOL .serialize($data), FILE_APPEND);
file_put_contents("db.txt", serialize($data));// will over write the file again and again. so you cant able to read all the data. FILE_APPEND helps to append the data And PHP_EOL helps to leave a line breake.
Hi i try this code for your solution:
<?php
$name = "rdn";
$url = "http://google.it";
$comm = "com";
$data["name"]=$name;
$data["url"]=$url;
$data["comm"]=$comm;
file_put_contents("db.txt", serialize($data)."\n",FILE_APPEND);
$fh = fopen('db.txt','r');
while ($line = fgets($fh)) {
// <... Do your work with the line ...>
var_dump(unserialize($line));
}
fclose($fh);
?>
without "\n" don't work!
i tried to search, but still dont know the solution at all, for my next PHP code.
<?php
$city="Budapest"; // Your city
$country="hu"; // Two digit country code
$url="http://api.openweathermap.org/data/2.5/weather?q=".$city.",".$country."&appid=2de143494c0b295cca9337e1e96b00e0&units=metric";
$json=file_get_contents($url);
$data=json_decode($json,true);
$file = '/home/cs2d/sys/lua/weather.dat';
$current = file_get_contents($file);
$current .= $data['weather'][0]['main']."\n".$data['main']['temp']."\n";
// Write the contents back to the file
file_put_contents($file, $current);
?>
As you can see it's a simple code, which write values into the weather.dat file.
But how to possible to do that its just refresh lines instead of add new one.
Any idea?
This works :
$city="Budapest"; // Your city
$country="hu"; // Two digit country code
$url="http://api.openweathermap.org/data/2.5/weather?q=".$city.",".$country."&appid=2de143494c0b295cca9337e1e96b00e0&units=metric";
$json=file_get_contents($url);
$data=json_decode($json,true);
$file = 'weather.dat';
$current = file_get_contents($file);
$contents = file_get_contents($file);
echo $current;
$contents = str_replace($current, ' ', $contents);
echo $contents;
file_put_contents($file,$contents);
$current = file_get_contents($file);
$current .= $data['weather'][0]['main']."\n".$data['main']['temp']."\n";
// Write the contents back to the file
file_put_contents($file, $current);
I am trying to make a program where I can add things to a list, read things, and clear the list. I have the clear function working perfectly, however I can't seem to add or read more than 1 line at a time. I am using fwrite($handle, $MyString); but that replaces everything in the entire file with $MyString. To get the information from the file I am using $list = fgets($handle); and then using echo to print it. This reads the first line in the file only.
Any help?
Thanks!
Getlist code:
<?php
$myFile = "needlist.txt";
$fh = fopen($myFile, 'r');
$theData = fgets($fh);
fclose($fh);
echo $theData;
?>
Add to the list code:
<?php
$neededlist = "needlist.txt";
$fh = fopen($neededlist, 'w');
$user_message = $_REQUEST['txtweb-message'];
$needed .= $user_message;
$needed .= "\n";
fwrite($fh, $needed);
fclose($fh);
echo "You have successfully added ", $user_message;
?>
When you write to the file are you opening your filehandle with the "a" mode option? Opening with "w" or "x" truncates it so you start with a clean file (http://php.net/fopen)
fgets(); reads only until the end of the line ( http://php.net/fgets ). To get the whole file you can try:
var $list = "";
var $line = "";
while ($line = fgets($handle)) {
$list = $list . "\n" . $line;
}
echo $list;
You want to add the "\n" because fread doesn't read the linefeeds IIRC. There're also a couple functions that might be more appropriate in this situation like file_get_contents and fread.
Fgets returns only one string. You should use it in cycle like that:
while (($buffer = fgets($handle, 4096)) !== false) {
echo $buffer;
}
I am very new to php, and i have search and put together this script to convert text to csv and write the out put on the file.
$File = "/var/apache2/htdocs/loginS/host.txt";
$Handle = fopen($File,"r");
$Content = fread ($Handle,filesize ($File));
fclose($File);
fclose($Handle);
$Content = explode("\t", $Content);
foreach($Content as $Value) {
//echo $Value."|"; // till this line working
fwrite($save, $Value);
fclose($save);
}
the problem is when I try to write on the file. I got only one line.what is my error.
You are calling fclose() on the file in your loop that is writing records. fclose() closes the file handle so it is no longer valid and cannot be written to.
Move fclose($save); after the } that ends the foreach() with your content.
Also, you could simplify things a bit by calling $Content = file_get_contents($File); since that is what you are doing in effect with fread(). Also, since $File is just a string variable, calling fclose() on it is unnecessary and doesn't do anything. You were correctly closing it by calling fclose() on $Handle. But using file_get_contents() will eliminate the need for both. The only file you would need is the one you were writing to.
Here is an example using the file() function which reads each line of a file into an array.
$file = '/var/apache2/htdocs/loginS/host.txt';
$content = file($file);
$save = fopen('./out.csv', 'w+');
foreach($content as $line) {
$line = rtrim($line, "\r\n"); // remove the newline from $line
$parts = explode("\t", $line);
$lineCsv = implode('|', $parts); // or ',' ?
fwrite($save, $lineCsv . "\n"); // write output to file
}
fclose($save);
Let say a text file contain
Hello everyone, My name is Alice, i stay in Canada.
How do i use php to find "Alice" and replace it with "John".
$filename = "C:\intro.txt";
$fp = fopen($filename, 'w');
//fwrite($fp, $string);
fclose($fp);
$contents = file_get_contents($filename);
$new_contents = str_replace('Alice', 'John', $contents);
file_put_contents($filename, $new_contents);
Read the file into memory using fread(). Use str_replace() and write it back.
If its a big file, use iteration instead of reading all into memory
$f = fopen("file","r");
if($f){
while( !feof($f) ){
$line = fgets($f,4096);
if ( (stripos($line,"Alice")!==FALSE) ){
$line=preg_replace("/Alice/","John",$line);
}
print $line;
}
fclose($f);
}