I'm trying to parse csv using str_getcsv in the following manner however I'm running into two problems (below).
$url = 'http://my.events.calendar/api/csv?mycalendarquery';
$response = wp_remote_get($url);
$response_body = $response['body']; // this is a really long string
$parsed_string = str_getcsv($response_body, ',', '"');
$full_events_array = array_chunk($parsed_string, 11);
Problem 1 - I can't use explode because one of the fields in the csv is "Description" which contains many/lengthy prose descriptions of events. Naturally these include commas, new lines, returns, etc...
Problem 2 - This is the one I have a question about. The categories (headers?) for the csv file are "Subject", "Date", (more things here...) "Description", "Calendar Address". However the last one doesn't have a comma after it. So, the entries for "Subject" and "Calendar" address are being combined like this -
array(11) {
[0] =>
string(32) "Calendar Address
"Application Due"" // this pattern happens for every event but with a url instead.
// Yes, I know this looks wrong in the code block, but this is exactly how the data is coming in (complete with the double quotes).
How do I parse this so that Calendar Address and Application Due are separated?
For reference, I've also tried str_getcsv($response_body, '"', ','); str_getcsv($response_body, ',', '"', '\n'); and several other combinations. Thanks for the help!
This script will read the CSV file into 251 rows of 12 elements each.
<?php // demo/temp_44414553.php
/**
* https://stackoverflow.com/questions/44414553/parsing-csv-where-the-last-header-is-followed-by-a-space?noredirect=1#comment75830321_44414553
*/
error_reporting(E_ALL);
// UNABLE TO ACCESS: http://events.uconn.edu/exports-2017-05-31-2017-07-01.csv
// COPY MADE HERE FROM THE DOWNLOAD LINK
$url = 'storage/exports-2017-05-31-2017-07-01.csv';
$csv = file_get_contents($url);
echo $csv;
$fpr = fopen($url, 'r');
if (!$fpr) trigger_error("Unable to open $url", E_USER_ERROR);
$kount = 0;
while (!feof($fpr))
{
$row = fgetcsv($fpr);
$kount++;
if (!$row) break;
echo PHP_EOL . count($row);
}
echo PHP_EOL . "There are $kount rows in the CSV at $url";
Related
In a txt file, there's the following:
Field1:Field2:Field3:Field4
Data1:Data2:Data3:Data4
How to get the text which is just after "Field1" which is "Field2" and without getting the ":" which is before "Field3" using PHP ?
NOTICE: "Field" won't be a constant string.
EDIT: I want to do something like searching for "Field2" and doing that on it's line only. So I don't want to do that for "Data" too !
Thanks.
EDIT: The main goal I wanted to ask this question for is:
IGNORE IF YOU WANT THE ANSWER, THE ANSWER IS BELOW:
I'm developing an AdminCP for my project, and if the administrator typed "User1" in a HTML form in the AdminCP it must return "This user is suspended!" if the line in the txt file was "User1:suspended:24/01/2012" .
While the format of users in the txt file is:
USERNAME:STATUS:REGISTRATION DATE
User1:suspended:24/01/2012
(All the texts and strings are just examples).
So in the below answer ... $searchfor = 'Field2'; must be $searchfor = $_POST['username']; for example.
And I wanted to use:
if( $data[1]=="suspended" ) {
echo "The user which owns ".$data[0]." is suspended!";
}
While $data[0] is the username (User1), and $data[1] is the status (suspended).
Thanks to #MagnusEriksson and PHP to search within txt file and echo the whole line . I just discovered the solution by myself:
<?php
$file = 'test.txt';
$searchfor = 'Field2';
// the following line prevents the browser from parsing this as HTML.
header('Content-Type: text/plain');
// get the file contents, assuming the file to be readable (and exist)
$contents = file_get_contents($file);
// escape special characters in the query
$pattern = preg_quote($searchfor, '/');
// finalise the regular expression, matching the whole line
$pattern = "/^.*$pattern.*\$/m";
// search, and store all matching occurences in $matches
preg_match_all($pattern, $contents, $matches);
$wholeLine = implode("\n", $matches[0]);
$data = explode(":", $wholeLine);
echo $data[0]; // Field1
echo $data[1]; // Field2
?>
I'm trying to delete/edit some portion of text from text file, like if I have 10 lines in my text file then I want to edit 5th line or delete 3rd line without affecting any other line.
Currently what I'm doing
1. open text file and read data in php variable
2. done editing on that variable
3. delete the content of text file.
4. write new content on it
but is there any way to doing that thing without deleting whole content or by just edit those content?
my current code is like this
$file = fopen("users.txt", "a+");
$data = fread($file, filesize("users.txt"));
fclose($file);
$newdata = str_replace($old, $new, $data);
file_put_contents("users.txt", "");
$file = fopen("users.txt", "a+");
fwrite($file, $newdata);
fclose($file);
You could shorten that to:
$data = file_get_contents("users.txt");
$newdata = str_replace($old, $new, $data);
file_put_contents("users.txt", $newdata);
$str = '';
$lines = file("users.txt");
foreach($lines as $line_no=>$line_txt)
{
$line_no += 1; // Start with zero
//check the line number and concatenate the string
if($line_no == 5)
{
// Append the $str with your replaceable text
}
else{
$str .= $line_txt."\n";
}
}
// Then overwrite the $str content to same file
// i.e file_put_contents("users.txt", $str);
I have added solution as per my understanding, Hope it will help!!!
You can work on each line:
$lines = file("users.txt");
foreach($lines as &$line){
//do your stufff
// $line is one line
//
}
$content = implode("", $lines);
//now you can save $content like before
If you've only got 10 lines in your text file, then unless they are very long lines you're changing the amount of physical I/O required to change the contents (disks will only read/write data one physical sector at a time - and the days of 512byte sectors are long gone).
Yes, you can modify a large file by only writing the sectors which have changed - but that requires that you replace the data with something the same size to prevent framing errors (in PHP using fopen with mode c+, fgets/fseek/fwrite/ftell, fclose).
Really the corect answer is to stop storing multivalued data in a text file and use a DBMS (which also solves the concurrency issues).
This is my first post on the internet for some assistance with coding so please bear with me!
I have been finding open code on the internet for a few years and modding it to do what I want but I seem to have come up against a wall with this one that I am sure is very simple. If you would please be able to help me it would be very much appreciated.
I have the following page:
<?php
$text = $_REQUEST['message'];
$f = file_get_contents("all.txt");
$f = explode(", ", $f);
function modFile($pos, $tothis, $inthis)
{
foreach($inthis as $pos => $a){
}
$newarr = implode("\r\n", $inthis);
$fh = fopen("example.txt", "w");
fwrite($fh, $newarr);
fclose($fh);
}
modFile(4, '', $f);
I have a file (all.txt) with the following:
11111111111, 22222222222, 33333333333, 44444444444
That I wish to display like this:
11111111111
22222222222
33333333333
44444444444
and to add a space then some text after each number where the text is the same on each line:
11111111111 text here
22222222222 text here
33333333333 text here
44444444444 text here
I have an html form that passes the custom text to be appended to each line.
I need to keep the file all.txt intact then save the newly formatted file with a different name.
I have tried putting variables into the implode where I currently have the "\r\n" but this does not work.
Any help very much appreciated.
Thanks in advance!
A few notes about your code: You are passing $pos to the function but it will get overwritten in the foreach. Also the foreach is empty, so what's it good for? And I don't see you use $text anywhere either.
To achieve your desired output, try this instead:
file_put_contents(
'/path/to/new.txt',
preg_replace(
'/[^\d+]+/',
' some text' . PHP_EOL,
file_get_contents('all.txt')
)
);
The pattern [^\d+]+ will match any string that is not a consecutive number and replace it with "some text " and a new line.
A somewhat more complicated version achieving the same would be:
file_put_contents(
'/path/to/new.txt',
implode(PHP_EOL, array_map(
function ($number) {
$message = filter_var(
$_POST['message'], FILTER_SANITIZE_SPECIAL_CHARS
);
return sprintf('%s %s', trim($number), $message);
},
array_filter(str_getcsv(file_get_contents('/path/to/all.txt')))
)
));
This will (from the inside out):
Load the content of all.txt and parse it as CSV string into an array. Each array element corresponds to a number.
Each of these numbers is appended with the message content from the POST superglobal (you dont want to use REQUEST).
The resulting array is then concatenated back into a single string where the concatenating character is a newline.
The resulting string is written to the new file.
In case the above is too hard to follow, here is a version using temp vars and no lambda:
$allTxtContent = file_get_contents('/path/to/all.txt');
$numbers = array_filter(str_getcsv($allTxtContent));
$message = filter_var($_POST['message'], FILTER_SANITIZE_SPECIAL_CHARS);
$numbersWithMessage = array();
foreach ($numbers as $number) {
$numbersWithMessage[] = sprintf('%s %s', trim($number), $message);
};
$newString = implode(PHP_EOL, $numbersWithMessage);
file_put_contents('/path/to/new.txt', $newString);
It does the same thing.
Your foreach() closing brace is on the wrong place. You've missed the exact part of running the execution of the new file creation. Here:
$text = $_REQUEST['message'];
$f = file_get_contents("all.txt");
$f = explode(", ", $f);
function modFile($pos, $tothis, $inthis, $text){
$fh = fopen("example.txt", "w");
foreach($inthis as $pos => $a){
$newarr = $a." ".$text."\r\n";
fwrite($fh, $newarr);
}
fclose($fh);
}
modFile(4, "", $f, $text);
This is for formatting your new file as you desire, however, you're not passing the new $text['message'] you want to append to your new file. You could either modify your mod_file() method or pass it within the foreach() loop while it runs.
EDIT* Just updated the whole code, should be now what you aimed for. If it does, please mark the answer as accepted.
I want to parse a comma separated value string into an array. I want to try the str_getcsv() php function but I can't find any good examples on how to use it.
For example I have an input where users submit tags for programming languages (php, js, jquery, etc), like the "tags" input in stackoverflow when you submit a question.
How would I turn an input with example value="php, js, jquery" into an array using str_getcsv?
Its true that the spec at http://us3.php.net/manual/en/function.str-getcsv.php doesn't include a standard example, but the user-submitted notes do a decent job of covering it. If this is a form input:
$val = $_POST['value'];
$data = str_getcsv($val);
$data is now an array with the values. Try it and see if you have any other issues.
I think you should maybe look at explode for this task.
$values = "php, js, jquery";
$items = explode(",", $values);
// Would give you an array:
echo $items[0]; // would be php
echo $items[1]; // would be js
echo $items[2]; // would be jquery
This would probably more efficient than str_getcsv();
Note that you would need to use trim() to remove possible whitespace befores and after item values.
UPDATE:
I hadn't seen str_getcsv before, but read this quote on the manpage that would make it seem a worthwhile candidate:
Why not use explode() instead of str_getcsv() to parse rows?
Because explode() would not treat possible enclosured parts of
string or escaped characters correctly.
For simplicity and readability, I typically find myself using just explode(), only adding in str_getcsv() if the following two conditions are met: 1) the primary delimiter is also used within the data itself; 2) the token that I'm trying to use as the main delimiter is enclosed by another distinct character.
For example, a basic parser for a CSV file:
$filename = $argv[1];
if (empty($filename)) { echo "Input file required\n"; exit; }
$AccountsArray = explode("\n", file_get_contents($filename));
As long as each of the elements of $AccountsArray doesn't embed a "," within the data itself, this will work perfectly and is straightforward and easy to follow:
foreach ($AccountsArray as $entry) {
$acctArr = explode(",", $entry);
}
However, often the data will contain the delimiter, at which point an enclosing token (a " in this example) has to be present. If so, then I switch to str_getcsv() like so:
foreach ($AccountsArray as $entry) {
$acctArr = str_getcsv($entry, ",", "\"");
}
//get the csv
$csvFile = file_get_contents('test.csv');
//separate each line
$csv = explode("\n",$csvFile);
foreach ($csv as $csvLine) {
//separet each fields
$linkToInsert = explode(",",$csvLine);
//echo what you need
//$linkToInsert[0] would be the first field, $linkToInsert[1] second field, etc
echo '• ' . $linkToInsert[1] . '<br>';
}
The code is quite simple, using the Str_getcsv function, we will go
through each line of the CSV file "images.csv" that is located in the
same directory as our script.
NOTE: Functions used are compatible with versions of PHP >= 5.3.0
//First, reading the CSV file
$csvFile = file('file.csv');
foreach ($csvFile as $line) {
$url = str_getcsv($line);
$ch = curl_init($url[0]);
$name = basename($url[0]);
if (!file_exists('directory/' . $name)) {
$fp = fopen('directory/' . $name, 'wb');
}
curl_setopt($ch, CURLOPT_FILE, $fp);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_exec($ch);
curl_close($ch);
fclose($fp);
}
I am using the following code which lets me navigate to a particular array line, and subarray line and change its value.
What i need to do however, is change the first column of all rows to BLANK or NULL, or clear them out.
How can i change the code below to accomplish this?
<?php
$row = $_GET['row'];
$nfv = $_GET['value'];
$col = $_GET['col'];
$data = file_get_contents("temp.php");
$csvpre = explode("###", $data);
$i = 0;
$j = 0;
if (isset($csvpre[$row]))
{
$target_row = $csvpre[$row];
$info = explode("%%", $target_row);
if (isset($info[$col]))
{
$info[$col] = $nfv;
}
$csvpre[$row] = implode("%%", $info);
}
$save = implode("###", $csvpre);
$fh = fopen("temp.php", 'w') or die("can't open file");
fwrite($fh, $save);
fclose($fh);
?>
Use foreach or array_map to perform the same action on all elements of an array.
In this case, something roughly along these lines?
foreach($rows as &$row) {
$row[0] = NULL;
}
I don't have a ready answer for you but I would recommend checking out CakePHP's Set class. It does things like this very well and (in some methods) supports XPath. Hopefully you can find the code you need there.
Depending on the size of that file, this could be much more efficient than looping through:
$data = file_get_contents("temp.php"); //data = blah%%blah%%blah%%blah%%###blah%%blah%%blah
$data = preg_replace( "/^(.+?)(?=%%)/", "\\1", $data ); //Replace first column to blank
$data = preg_replace( "/(###)(.+?)(?=%%))/", "\\1", $data ); //Replace all other columns to blank
After that, write it back to the file as you did above.
This would need to be adjusted to allow for escape characters if your columns allow %% to appear consecutively within them, but other than that, this should work.
If you expect this csv file to get REALLY large, you should start thinking of looping through the file line by line rather than reading it completely into memory using file_get_contents. I would point you to fgets_csv, but I don't believe it is possible to get each csv line by any delimiter other than newline (unless you are willing to replace your ### separator with \r\n). If you end up going this way, the answer totally changes :P
For more information on Regex (specifically positive lookaheads) see Regex Tutorial - Lookahead and Lookbehind Zero-Width Assertions (also a great site for regex in general)