My code generates a txt file using PHP's fputcsv function.
For the delimiter, I am trying to use '|'
$query = mysql_query("SELECT email, emailSource FROM session WHERE is_complete='1' ORDER by sessionid ASC")
$filename= 'here.txt';
$fp = fopen( $filename,'w');
fputcsv($fp, array('Email address', 'Email Source'));
if(mysql_numrows($query) > 0) {
while ($row = mysql_fetch_array($query, MYSQL_ASSOC)) {
fputcsv($fp, array_values($row));
}
}
fclose($fp);
$contents = file_get_contents($filename);
$contents = str_replace(",", "|", $contents);
file_put_contents($filename, $contents);
The result I get is all on one line instead of showing the values on a seperate line and I also have "" around the headers.
"Email address"|"Email Source"|blah#blah.com|hi|
instead of this:
Email address|Email Source|
blah#blah.com|hi|
Please can someone tell me what I am doing wrong. Is it because I am using fputcsv and saving to a txt file?
Get rid of the str_replace / file_get_contents/ file_put_contents block. Instead of fputcsv($fp, array('...')), use fputcsv($fp, array('...'), '|');
Related
I am using the below for csv export but i want to export as a pipe delimeted output text file format.
My code generates a txt file using PHP's fputcsv function.
For the delimiter, I am trying to use '|'.
this mycode:
function to_CSV($table) {
$file_csv = "file_csv.csv";
$fp = fopen('php://output', 'w');
$query = "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA='htmltable' AND TABLE_NAME='$table'";
$result = mysqli_query(db_connect(),$query);
while ($row = mysqli_fetch_row($result)) {
$header[] = $row[0];
}
header('Content-type: application/csv');
header('Content-Disposition: attachment; filename='.$file_csv);
fputcsv($fp, $header);
$query ="SELECT * from $table";
$result = mysqli_query(db_connect(),$query);
while($row = mysqli_fetch_row($result)) {
fputcsv($fp, $row);
}
exit;
}
fclose($fp);
$contents = file_get_contents($file_csv);
$contents = str_replace(",", "|", $contents);
file_put_contents($file_csv, $contents);
How to implementation in codeigniter. help me out please.
thanks a lot.
according to the docs fputcsv format line as CSV and write to file pointer, it has a third parameter which expects a delimiter - take a look at
https://www.php.net/manual/en/function.fputcsv
In your case it means
while($row = mysqli_fetch_row($result)) {
fputcsv($fp, $row, '|');
}
however the main question is - if you use Codeigniter as underlying Framework - why dont you use the model principle and aside of that the provided query builder? - it will make your life much easier.
You can find more informations in their very well written documentation. Take a look at https://codeigniter.com/user_guide/general/models.html?highlight=model
This question already has answers here:
How to delete a line from the file with php?
(10 answers)
Closed last year.
i was wondering if it is posible to delete a single line in a txt file with php.
I am storing emailadresses in a flat txt file named databse-email.txt
I use this code for it:
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$email = $_POST['email-subscribe'] . ',' . "\n";
$store = file_put_contents('database-email.txt', $email, FILE_APPEND | LOCK_EX);
if($store === false) {
die('There was an error writing to this file');
}
else {
echo "$email successfully added!";
}
}
?>
Form:
<form action="" method="POST">
<input name="email-subscribe" type="text" />
<input type="submit" name="submit" value="Subscribe">
</form>
The content of the file looks like this:
janny#live.nl,
francis#live.nl,
harry#hotmail.com,
olga#live.nl,
annelore#mail.ru,
igor#gmx.de,
natasha#hotmail.com,
janny.verlinden#gmail.com,
All lines are , seperated
Lets say i want to delete only the emailadres: igor#gmx.de
How can i do that?
What i want to achieve is a unsubscribe form and delete a single line in the .txt file
You can use str_replace
$content = file_get_contents('database-email.txt');
$content = str_replace('igor#gmx.de,', '', $content);
file_put_contents('database-email.txt', $content);
Because of the way the filesystem works you can't do this in an intuitive way. You have to overwrite the file with all the lines except the one you want to delete, here's an example:
$emailToRemove = "igor#gmx.de";
$contents = file('database-email.txt'); //Read all lines
$contents = array_filter($contents, function ($email) use ($emailToRemove) {
return trim($email, " \n\r,") != $emailToRemove;
}); // Filter out the matching email
file_put_contents('database-email.txt', implode("\n", $contents)); // Write back
Here's a streaming alternative solution in the cases where the file does not fit in memory:
$emailToRemove = "igor#gmx.de";
$fh = fopen('database-email.txt', "r"); //Current file
$fout = fopen('database-email.txt.new', "w"); //New temporary file
while (($line = fgets($fh)) !== null) {
if (trim($line," \n\r,") != $emailToRemove) {
fwrite($fout, $line, strlen($line)); //Write to new file if needed
}
}
fclose($fh);
fclose($fout);
unlink('database-email.txt'); //Delete old file
rename('database-email.txt.new', 'database-email.txt'); //New file is old file
There is also a way to do this in-place to minimize extra disk needed but that is trickier.
You can do it programmatically which will just look over every line and if it not what you want to delete, it gets pushed to an array that will get written back to the file . Like below
$DELETE = "igor#gmx.de";
$data = file("database-email.txt");
$out = array();
foreach($data as $line) {
if(trim($line) != $DELETE) {
$out[] = $line;
}
}
$fp = fopen("database-email.txt", "w+");
flock($fp, LOCK_EX);
foreach($out as $line) {
fwrite($fp, $line);
}
flock($fp, LOCK_UN);
fclose($fp);
first read the file using fopen and fget , and make array to list the emails you want to remove , use in_array to check if value exists in array , and then after remove unwanted emails save the file using fwrite and you need to close the file after the read and the write operations using fclose
checkout this code
$data = "";
$emailsToRemove = ["igor#gmx.de" , "janny#live.nl"];
//open to read
$f = fopen('databse-email.txt','r');
while ($line = fgets($f)) {
$emailWithComma = $line . ",";
//check if email marked to remove
if(in_array($emailWithComma , $emailsToRemove))
continue;
$data = $data . $line;
}
fclose($f);
//open to write
$f = fopen('databse-email.txt','w');
fwrite($f, $data);
fclose($fh);
for delete special word and next delete blank line try this:
$file = "file_name.txt";
$search_for = "example_for_remove";
$file_data = file_get_contents($file);
$pattern = "/$search_for/mi";
$file_data_after_remove_word = preg_replace($pattern, '', $file_data);
$file_data_after_remove_blank_line = preg_replace("/(^[\r\n]*|[\r\n]+)[\s\t]*[\r\n]+/", "\n", $file_data_after_remove_word);
file_put_contents($file,$file_data_after_remove_blank_line);
Here my php script to export database info to CSV file.
I dont arrive to put any structure to correctly tidy my infos in my CSV file.
For example, put all names in a name column, all emails in an email column... etc
include_once('conf.php');
include_once('BDD.php');
header('charset=UTF-8');
header("Content-Disposition: attachment; filename=file.csv");
header("Pragma: no-cache");
header("Expires: 0");
$bdd = new BDD($conf['bddhost'], $conf['bddport'], $conf['bddname'], $conf['bdduser'], $conf['bddpass']);
$sql = "SELECT * FROM user";
$qry = $bdd->prepare($sql);
// Execute the statement
$qry->execute();
$data = fopen('/tmp/db_user_export_".time().".csv', 'w');
while ($row = $qry->fetch(PDO::FETCH_ASSOC))
{
// Export every row to a file
fputcsv($data, $row);
echo ''.$row['prenom'].' '
.$row['nom'].' '
.$row['email'].' '
.$row['cp'].' '
.$row['information'].'
';
}
fclose($data);
You don't want to use echo as you are creating the file with fputcsv
while ($row = $qry->fetch(PDO::FETCH_ASSOC))
{
// Export every row to a file
fputcsv($data, $row);
}
// reset the file pointer to the beginning of the file
rewind($data);
// dump the csv file and stop the script
fpassthru($data);
exit;
Syntax errors:
$data = fopen('/tmp/db_user_export_".time().".csv', 'w');
^-- ^-- ^-- ^---
You're mixing string quoting styles, so your filename is literally going to contain the characters ", ., t, etc... in it.
Try
$data = fopen('/tmp/db_user_export_' .time() .'.csv', 'w');
^----------^---
instead. Note the change from " -> '.
Since your result is an array, this may help you out:
Convert php array to csv string
if(!function_exists('str_putcsv'))
{
function str_putcsv($input, $delimiter = ',', $enclosure = '"')
{
// Open a memory "file" for read/write...
$fp = fopen('php://temp', 'r+');
// ... write the $input array to the "file" using fputcsv()...
fputcsv($fp, $input, $delimiter, $enclosure);
// ... rewind the "file" so we can read what we just wrote...
rewind($fp);
// ... read the entire line into a variable...
$data = fread($fp, 1048576);
// ... close the "file"...
fclose($fp);
// ... and return the $data to the caller, with the trailing newline from fgets() removed.
return rtrim($data, "\n");
}
}
$csvString = '';
foreach ($list as $fields) {
$csvString .= str_putcsv($fp, $fields);
}
More about this on GitHub, a function created by #johanmeiring.
whats wrong with this, when i echo out a row from the csv file and concat anything to the end of the row, it doesnt show up, instead all the rows are echo'ed and the concated string only shows up once at the very end, is this some kind of buffering thing that wont let me concat strings with stuff from my csv file, its running on my local wamp server, and i have tryed different line delimiter in my expload function, im sure the file only uses \n at the end of a line
im trying to parse a csv file row by row so i can check the content of it before i use it to construct an sql statement and insert it into my database.
$file = fopen($filename, "r")
$filesize = filesize($filename);
$filecontent = fread($file, $filesize);
fclose($file);
$rows = explode("\n", trim($filecontent));
foreach ($rows as $row)
{
echo $row . '<br />';
}
You are splitting the string by the string \n. Unless the actual string "\n" appears anywhere in the file, this will probably do nothing. You probably meant "\n" (double quotes), which makes this an actual line break.
Your overall process is terribly inefficient though. You should use fgetcsv and process the file line by line, instead of reading it into memory all at once.
$handle = fopen('test.csv', 'r');
while (($row = fgetcsv($handle)) !== false) {
foreach ($row as $field) {
echo $field . '<br />';
}
}
fclose($handle);
Use fgetcsv() function to convert a CSV file to an array:
$csvFile = "test.csv";
$csvSeparator = ",";
$csvFileLength = filesize($csvFile);
$handle = fopen($csvFile, "r");
$csvData = fgetcsv($handle, $csvFileLength, $csvSeparator);
fclose($handle);
Dump the data to show the structure:
var_dump($csvData);
Now you can convert the data to use in database.
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);
}