PHP data processing not outputting - php

Hi I am trying to get this external text file to print inside my php document. The code looks fine to me however when I echo it does not output anything and I am not sure why this is. Can anybody help me out as I am new to this.
$location = '/Applications/MAMP/htdocs/PHPLabs/branches.txt';
$fp = fopen($location, 'r');
if ($fp) {
$readin = fread($fp);
fclose($fp);
} else {
echo 'Can\'t open input.txt';
}


Not sure what you're trying to 'echo' but have you checked if the file exists in the first place?
Your code could be written as:
$location = '/Applications/MAMP/htdocs/PHPLabs/branches.txt';
if (file_exists($location) && $data = file_get_content($location)){
echo $data;
} else {
echo 'File not found';
}
if (file_exists($location) && $file = fopen($location, 'r')){
$file_content = fread($file, filesize($location));
fclose($file);
} esle {
echo 'File not found';
}
See here for more: http://php.net/manual/en/function.file-get-contents.php, http://php.net/manual/en/function.filesize.php

Related

PHP: My text file only gets read when I add include function

I am new to PHP and I am currently working on File Handling. I have a text file of which I am attempting to open for reading/appending using a skeleton script. The file is outputting and showing it is successfully opening, but only when I add a include function into the code. I have my code below, can someone look at it and tell me if I am doing it right because it feels right to me at the minute and it does output but i'm not 100% positive.
$location = '/Applications/MAMP/htdocs/PHPLabs/branches.txt';
include($location);
if (file_exists($location) && $file = fopen($location, 'r')){
$file_content = fread($file, filesize($location));
fclose($file);
} else {
echo 'File not found';
}

change your code to read and output file to below:
$location = '/Applications/MAMP/htdocs/PHPLabs/branches.txt';
//include($location); remove include
if (file_exists($location) && $file = fopen($location, 'r')){
$file_content = fread($file, filesize($location));
echo $file_content; //<----echo here to display content
fclose($file);
} else {
echo 'File not found';
}

Another option is to use file_get_contents().
It will also read the text file but it will read the text files full contents to a string.
$location = '/Applications/MAMP/htdocs/PHPLabs/branches.txt';
if (file_exists($location)){
$file_content = file_get_contents($file);
Echo $file_content;
$file_content .= " And some more"; //append string to end of string
Echo $file_content; // echo with appended string.
File_put_contetnts($file, $file_content); // save the original text plus the appended.
} else {
echo 'File not found';
}

fgetCsv Returning null values for csv file in php

I have a csv file placed at path
#http://thevowapp.com/brandstore/values.csv
$f = fopen("http://thevowapp.com/brandstore/values.csv", "w+");
if(!f)
{
echo "Error";
}
$line = fgetcsv($f);
echo json_encode($line);
I am trying to parse it, however the fgetCsv keeps on returning null. What could be the error?

Problems:
You try to open a remote file with w+ (write) access. Use r for read.
You check f (undefined constant). Use$f`.
You don't loop fgetcsv, so you won't get more than the header line.
Try:
$f = fopen('http://thevowapp.com/brandstore/values.csv', 'r');
if(!$f) {
echo 'Error';
exit;
}
$out = array();
while ($line = fgetcsv($f)) {
$out[] = $line;
}
echo json_encode($out, JSON_PRETTY_PRINT);
Remove the pretty print option when you're happy.

Reading textfiles from path in a text file [PHP]

I have a textfile ($file) that contains the path to other files. My goal is to read the content of those files and print it in a table. When reading the paths from $file, only the last line path works correctly.
<?php
$file = "log2.txt";
if(file_exists($file)) {
$handler = fopen($file,'r');
while(!feof($handler)) {
$lines = fgets($handler);
$wordarray = explode(' ', $lines);
#echo $wordarray[0]." ".$wordarray[1]." ".$wordarray[2];
if (strpos($lines, 'NOK') !== false) {
echo "<tr><td>".$wordarray[0]."</td></tr>";
if(file_exists($wordarray[2])){
$log = fopen($wordarray[2], 'r');
#echo "FILE EXISTS ".$log;
$logtext = fread($log,filesize($wordarray[2]));
echo "<tr><td>".$logtext."</td></tr>";
fclose($log);
} else {
echo "<tr><td>"."FILE ".$wordarray[2]." FAILED TO LOAD"."</td></tr>";
}
}
}
fclose($handler);
} else {
echo "FILE DOES NOT EXISTS";
}
?>
Here is an exemple of how log2.txt would look like:
POE NOK poelog.txt
LINK-ERRORS OK OK
LATENCIES NOK latencieslog.txt
VOLATILE NOK volatilelog.txt
I think that the problem could be about line endings or so, but cannot get the point.

You're right. The $wordarray[2] contains also new line character so before using it pass it through trim() function and store it in a variable ($filename in my case).
Updated inner if:
if (strpos($lines, 'NOK') !== false) {
echo "<tr><td>".$wordarray[0]."</td></tr>";
$filename = trim($wordarray[2]);
if (file_exists($filename)){
echo "FILE EXISTS ".$filename;
$log = fopen($filename, 'r');
$logtext = fread($log, filesize($filename));
echo "<tr><td>".$logtext."</td></tr>";
fclose($log);
}
else{
echo "<tr><td>"."FILE ".$filename." FAILED TO LOAD"."</td></tr>";
}
}

This short function works like a sharm:
function displayFileContent( $fileName )
{
$arrayWithFileNames = file ( $fileName );
echo "<table>";
foreach ( $arrayWithFileNames as $singleFileName )
{
# remove the trailing \n on Linux - windows has 2 character as EOL
$singleFileName = trim(preg_replace('/\s\s+/', ' ', $singleFileName));
$contentOfFile = file_get_contents( $singleFileName );
echo "<tr><td>{$contentOfFile}</td></tr>";
}
echo "</table>";
}
You use it like this:
displayFileContent ("path-to-your-file");
Remark: There is no check if the file does exist....

Find and replace word in text file

I want to detect if a word in a text file exists, and then remove it.. so, this is my code:
<?php
$search = $id;
$lines = file("./user/".$_GET['own'].".txt");
// Store true when the text is found
$found = false;
foreach($lines as $line)
{
if(strpos($line, $search) !== false)
{
$found = true;
// open to read and modify
$file = "./user/".$_GET['own'].".txt";
$fh = fopen($file, 'r+');
$data = fread($fh, filesize($file));
$new_data = str_replace($id."\n", "", $data);
fclose($fh);
// Open to write
$fh = fopen($file, 'r+');
fwrite($fh, $new_data);
fclose($fh);
$status = "has been successfully deleted.";
}
}
// If the text was not found, show a message
if(!$found)
{
$status = "is not exist in your list.";
}
?>
I got this work hours before.. I did some changes to my script and somehow, it didnt work anymore.. can anyone see through the code and tell me what is wrong??
or can anybody give simpler way to do what I want?? my code is messed..

I want to detect if a word in a text file exists, and then remove it..
<?php
$search = $id;
$filename="./user/".$_GET['own'].".txt";
$contents = file_get_contents($filename);
$contents = str_replace($id."\n", "", $contents);
file_put_contents($filename,$contents);
?>
That is all that there is to it.
Edit:
To make this equivalent to your solution, one can use
<?php
$search = $id;
$filename="./user/".$_GET['own'].".txt";
$contents = file_get_contents($filename);
$contents = str_replace($id."\n", "", $contents,$count);
if($count>0)
{
file_put_contents($filename,$contents);
echo "found and removed";
}
else
{
echo "not found";
}
?>

PHP Simultaneous file access / flock() issue

I'm having trouble implementing a script which should parse a json string from a file, either overwrite the object with the same id or add it to the json array and write it back to the file. The script is called in a for loop so that I tried to use flock to prevent overwriting the file before the json string could be parsed, but the results look really strange and I don't know whats going wrong. Here is the script:
$method = $_SERVER['REQUEST_METHOD'];
$file = fopen($userid . '.json', 'c+');
flock($file, LOCK_EX);
$jsonStr = (filesize($userid . '.json') == 0 ) ? '{"success": true}' : fread($file, filesize($userid . '.json'));
$jsonObj = json_decode($jsonStr);
if($method === 'POST') {
$dataStr = file_get_contents('php://input');
$dataObj = json_decode($dataStr);
$replacements = array();
if(isset($jsonObj->images)) {
foreach($jsonObj->images as $idx=>$image) {
if($image->id == $dataObj->id) {
$replacements += array($idx => $dataObj);
}
}
if(count($replacements)==0) {
array_push($replacements, $dataObj);
}
$jsonObj->images = array_replace($jsonObj->images, $replacements);
} else {
//$jsonObj = new stdClass();
$jsonObj->images = new stdClass();
$jsonObj->images = array($dataObj);
}
fwrite($file, json_encode($jsonObj));
file_put_contents('log.json', json_encode($dataObj), FILE_APPEND);
echo '{"success":true, "images":' . $dataStr . '}';
} else if($method === 'GET') {
echo $jsonStr;
}
fclose($file);
As result I get sometime three files one just called ".json" and the other one correctly userid.json and the log.json. The log looks best, since all 26 objects are shown correctly, but without checking for exiting objects previously. The ".json" is just blank and the looks really odd:
{"success":true,"images":[{"id":"f9f4b6ee-8b7b-414e-98f4-47ed5ee3c594","top":1200,"left":4050,"clicks":0,"affinity":[]}]}
{"success":true,"images":[{"id":"034c7661-9466-4651-b860-7e049e1543ac","top":900,"left":600,"clicks":0,"affinity":[]}]}
{"images":[{"id":"eebc35ec-6c0e-416a-9516-061df821083d","top":1800,"left":3300,"clicks":0,"affinity":[]}]}
{"images":[{"id":"e09da5b9-2e65-4a12-94cd-4745b354a256","top":1200,"left":1200,"clicks":0,"affinity":[]}]}
{"images":[{"id":"b023a259-4554-48a5-acd8-cb4215e6a391","top":1350,"left":1500,"clicks":0,"affinity":[]}]}
{"images":[{"id":"6521d8c3-461c-4fcd-b69d-69f14ae37418","top":600,"left":3750,"clicks":0,"affinity":[]}]}
{"images":[{"id":"4c082c1a-d4ae-4c1c-bfc4-ed36980f5db2","top":3150,"left":600,"clicks":0,"affinity":[]}]}
{"images":[{"id":"22dbdea2-4936-4353-825e-9af6e6f2ca93","top":3000,"left":2100,"clicks":0,"affinity":[]}]}
{"images":[{"id":"a7ba32d4-912e-489d-8f9b-e412bc1629c1","top":2850,"left":3750,"clicks":0,"affinity":[]}]}
{"images":[{"id":"b258148d-1779-4f17-ae5e-1160aa0a34b9","top":750,"left":4050,"clicks":0,"affinity":[]}]}
{"images":[{"id":"21c1c9d1-a7a6-48d2-a4ba-174c0fe248a3","top":1650,"left":750,"clicks":0,"affinity":[]}]}
{"images":[{"id":"bfed2f56-7876-4eb2-a217-e0f71f4455ee","top":3300,"left":1500,"clicks":0,"affinity":[]}]}
{"images":[{"id":"7f13b674-5d07-444f-bf6d-463758c96788","top":1650,"left":1950,"clicks":0,"affinity":[]}]}
{"images":[{"id":"fb8711f2-ba10-44d7-9038-02cae6438506","top":1800,"left":450,"clicks":0,"affinity":[]}]}
{"images":[{"id":"ac83e869-e4fb-4eee-8d2e-4d26762101d9","top":750,"left":1800,"clicks":0,"affinity":[]}]}
{"images":[{"id":"069a7595-2271-4430-b324-974115df7b80","top":2550,"left":1800,"clicks":0,"affinity":[]}]}
{"images":[{"id":"ea9ab2fc-e179-4f56-9ce7-8af456911b33","top":1950,"left":750,"clicks":0,"affinity":[]}]}
{"images":[{"id":"9b997ae3-0c66-4f78-937a-2fde2470d7d7","top":300,"left":300,"clicks":0,"affinity":[]}]}
{"images":[{"id":"f860dea4-3b27-4401-999b-72ce45022110","top":1200,"left":1950,"clicks":0,"affinity":[]}]}
{"images":[{"id":"2633c107-8a51-4e9c-bc2c-f87c30f7359d","top":750,"left":2100,"clicks":0,"affinity":[]}]}
{"images":[{"id":"bebcb2bb-c2f0-4e4d-b202-b05090eacf49","top":3600,"left":3600,"clicks":0,"affinity":[]}]}
{"images":[{"id":"460f961e-f1dd-4329-95be-d30770a37b83","top":2400,"left":1200,"clicks":0,"affinity":[]}]}
{"images":[{"id":"ee9b254f-fe6a-4ece-a662-e934625e992a","top":3600,"left":600,"clicks":0,"affinity":[]}]}
{"images":[{"id":"4e047ea9-345e-4cf9-a066-d0b431820c61","top":2100,"left":1350,"clicks":0,"affinity":[]}]}
{"images":[{"id":"8bbb5327-6d39-40e1-919e-d7b70e13fc2b","top":2700,"left":1200,"clicks":0,"affinity":[]}]}
{"images":[{"id":"0c50c0ec-e18b-4917-9787-bad245eed798","top":1200,"left":2550,"clicks":0,"affinity":[]}]}
I also get an exception:
<b>Strict Standards</b>: Creating default object from empty value in <b>C:\xampp\htdocs\gallery\store.php</b> on line <b>38</b><br />
I guess I didn't understand the procedure correctly and I'm happy for any help.
EDIT: The result I want, looks like this:
{"success":true,"images":[{"id":"f9f4b6ee-8b7b-414e-98f4-47ed5ee3c594","top":1200,"left":4050,"clicks":0,"affinity":[]},
{"id":"034c7661-9466-4651-b860-7e049e1543ac","top":900,"left":600,"clicks":0,"affinity":[]},{"id":"eebc35ec-6c0e-416a-9516-061df821083d","top":1800,"left":3300,"clicks":0,"affinity":[]},
{"id":"e09da5b9-2e65-4a12-94cd-4745b354a256","top":1200,"left":1200,"clicks":0,"affinity":[]},
{"id":"b023a259-4554-48a5-acd8-cb4215e6a391","top":1350,"left":1500,"clicks":0,"affinity":[]},
{"id":"6521d8c3-461c-4fcd-b69d-69f14ae37418","top":600,"left":3750,"clicks":0,"affinity":[]},
{"id":"4c082c1a-d4ae-4c1c-bfc4-ed36980f5db2","top":3150,"left":600,"clicks":0,"affinity":[]},
{"id":"22dbdea2-4936-4353-825e-9af6e6f2ca93","top":3000,"left":2100,"clicks":0,"affinity":[]},
{"id":"a7ba32d4-912e-489d-8f9b-e412bc1629c1","top":2850,"left":3750,"clicks":0,"affinity":[]},
{"id":"b258148d-1779-4f17-ae5e-1160aa0a34b9","top":750,"left":4050,"clicks":0,"affinity":[]},
{"id":"21c1c9d1-a7a6-48d2-a4ba-174c0fe248a3","top":1650,"left":750,"clicks":0,"affinity":[]},
{"id":"bfed2f56-7876-4eb2-a217-e0f71f4455ee","top":3300,"left":1500,"clicks":0,"affinity":[]},
{"id":"7f13b674-5d07-444f-bf6d-463758c96788","top":1650,"left":1950,"clicks":0,"affinity":[]},
{"id":"fb8711f2-ba10-44d7-9038-02cae6438506","top":1800,"left":450,"clicks":0,"affinity":[]},
{"id":"ac83e869-e4fb-4eee-8d2e-4d26762101d9","top":750,"left":1800,"clicks":0,"affinity":[]},
{"id":"069a7595-2271-4430-b324-974115df7b80","top":2550,"left":1800,"clicks":0,"affinity":[]},
{"id":"ea9ab2fc-e179-4f56-9ce7-8af456911b33","top":1950,"left":750,"clicks":0,"affinity":[]},
{"id":"9b997ae3-0c66-4f78-937a-2fde2470d7d7","top":300,"left":300,"clicks":0,"affinity":[]},
{"id":"f860dea4-3b27-4401-999b-72ce45022110","top":1200,"left":1950,"clicks":0,"affinity":[]},
{"id":"2633c107-8a51-4e9c-bc2c-f87c30f7359d","top":750,"left":2100,"clicks":0,"affinity":[]},
{"id":"bebcb2bb-c2f0-4e4d-b202-b05090eacf49","top":3600,"left":3600,"clicks":0,"affinity":[]},
{"id":"460f961e-f1dd-4329-95be-d30770a37b83","top":2400,"left":1200,"clicks":0,"affinity":[]},
{"id":"ee9b254f-fe6a-4ece-a662-e934625e992a","top":3600,"left":600,"clicks":0,"affinity":[]},
{"id":"4e047ea9-345e-4cf9-a066-d0b431820c61","top":2100,"left":1350,"clicks":0,"affinity":[]},
{"id":"8bbb5327-6d39-40e1-919e-d7b70e13fc2b","top":2700,"left":1200,"clicks":0,"affinity":[]},
{"id":"0c50c0ec-e18b-4917-9787-bad245eed798","top":1200,"left":2550,"clicks":0,"affinity":[]}]}
Cheers,
Daniel

I finally have it working and for anyone else having issues with simultaneous file access, here's my solution:
Check if the file exists, if not, create it and set up the data structure (to prevent the strict standard error)
$filename = $userid . '.json';
if(!file_exists($filename)) {
$file = fopen($filename, 'w');
if(flock($file, LOCK_EX)) {
fwrite($file, '{"success": true, "images": []}');
flock($file, LOCK_UN);
fclose($file);
}
}
Open the file using c+ as second parameter (w+ would set the filesize to 0). Check if you can get the exclusive lock. Read the file and rewind in order to overwrite it later.
else {
$file = fopen($userid . '.json', 'c+');
if(flock($file, LOCK_EX)) {
$jsonStr = fread($file, filesize($userid . '.json'));
$jsonObj = json_decode($jsonStr);
rewind($file);
Manipulate the object how you need it and write it back as encoded json string using fwrite
if($method === 'POST') {
$dataStr = file_get_contents('php://input');
if(isset($dataStr) &&$dataStr != '') {
$dataObj = json_decode($dataStr);
$replace = -1;
foreach($jsonObj->images as $idx=>$image) {
if($image->id == $dataObj->id) {
$replace = $idx;
}
}
if($replace != -1) {
$img = $jsonObj->images;
$img[$replace] = $dataObj;
$jsonObj->images = $img;
} else {
array_push($jsonObj->images, $dataObj);
}
fwrite($file, json_encode($jsonObj));
}
echo '{"success":true, "images":' . $dataStr . '}';
} else if($method === 'GET') {
echo $jsonStr;
}
Release the lock and close the file.
flock($file, LOCK_UN);
fclose($file);
}
}

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