Is it possible to export csv data in to two parts:
From the below image i have two things to be considered
1. summery
2. Detail information
I worked with only 2nd type is it possible to do like 2 batches(like shown in image)..?
please suggest any alternate idea if you got.
Example:
summary header
$titleSummery = array('Course Name','Average watched','semi watched','notwached','sudents attempted','sudents notattempted','Total students','Branch','passout');
/*summery data */
Details header
$titleDetail = array('student','passout','branch','percentage watched','student email');
/*Details data */
In this case how can i export the data..?
$output = fopen('php://output', 'w');
fputcsv($output, $title);
foreach($data as $k=>$res){
fputcsv($output,$res);
}
You need to prepare array for each line. see my inline comments.
$titleSummery = array('Course Name','Average watched','semi watched','notwached','sudents attempted','sudents notattempted','Total students','Branch','passout');
$titleSummeryData = array('Number System','50%','40%',....); // fill remaining data.
$output = fopen('php://output', 'w');
// put first table
foreach($titleSummery as $key=>$val){
fputcsv($output,array($val,$titleSummeryData[$key]));
}
// begin second table
// put all title/header
fputcsv($output,$titleDetail);
// For second table i assume that you have data in 2D array
foreach($titleDetailsData as $row){
fputcsv($output);
}
fclose($output);
You direction is good, you just need to understand that each call to fputcsv prints a line, so you'll need to call it for each row in the first batch of data also, for example:
fputcsv($output,"course name","php for dummies");
Related
My text file sample.txt. I want to exclude the first row from the text file and store the other rows into mysql database.
ID Name EMail
1 Siva xyz#gmail.com
2 vinoth xxx#gmail.com
3 ashwin yyy#gmail.com
Now I want to read this data from the text file except the first row(ID,name,email) and store into the MYsql db.Because already I have created a filed in database with the same name.
I have tried
$handle = #fopen($filename, "r"); //read line one by one
while (!feof($handle)) // Loop till end of file.
{
$buffer = fgets($handle, 4096); // Read a line.
}
print_r($buffer); // It shows all the text.
Please let me know how to do this?
Thanks.
Regards,
Siva R
It's easier if you use file() since it will get all rows in an array instead:
// Get all rows in an array (and tell file not to include the trailing new lines
$rows = file($filename, FILE_IGNORE_NEW_LINES);
// Remove the first element (first row) from the array
array_shift($rows);
// Now do what you want with the rest
foreach ($rows as $lineNumber => $row) {
// do something cool with the row data
}
If you want to get it all as a string again, without the first row, just implode it with a new line as glue:
// The rows still contain the line break, since we only trimmed the copy
$content = implode("\n", $rows);
Note: As #Don'tPanic pointed out in his comment, using file() is simple and easy but not advisable if the original file is large, since it will read the whole thing into memory as an array (and arrays take more memory than strings). He also correctly recommended the FILE_IGNORE_NEW_LINES-flag, just so you know :-)
You can just call fgets once before your while loop to get the header row out of the way.
$firstline = fgets($handle, 4096);
while (!feof($handle)) // Loop till end of file.
{ ...
I'm trying to display only the rows that contain a specific word in a specific column. Basically I would like to show only the rows that have "yes" in the Display column.
First_Name, Last_Name, Display
Kevin, Smith, yes
Jack, White, yes
Joe, Schmo, no
I've been trying various things with fgetcsv & str_getcsv from other answers and from php.net but nothing is working so far.
It doesn't do anything but this is my current code:
$csv = fopen('file.csv', 'r');
$array = fgetcsv($csv);
foreach ($array as $result) {
if ($array[2] == "yes") {
print ($result);
}
}
Let's have a look at the documentation for fgetcsv():
Gets line from file pointer and parse for CSV fields
fgetcsv reads a single line, not the whole file. You can keep reading lines until you reach the end of the file by putting it in a while loop, e.g.
<?php
$csv = fopen('file.csv', 'r');
// Keep looping as long as we get a new $row
while ($row = fgetcsv($csv)) {
if ($row[2] == "yes") {
// We can't just echo $row because it's an array
//
// Instead, let's join the fields with a comma
echo implode(',', $row);
echo "\n";
}
}
// Don't forget to close the file!
fclose($csv);
You should use data tables.
https://datatables.net/examples/basic_init/zero_configuration.html
That's how I deal with my textfiles. But be carefull, with a large amount of Data (> 10000 rows) you should have a loog at the deferRender option.
https://datatables.net/reference/option/deferRender <-- JSON DATA required.
I'm trying to write in 2 differents columns in a csv file but everything I've found set all the values in the first column with a separator.
Here is a small modification of the script example on php.net
<?php
$list = array (
['City', 'Country'],
['Brussels', 'Belgium'],
['Paris', 'France'],
['Berlin', 'Germany']
);
$fp = fopen('file.csv', 'w');
foreach ($list as $fields) {
fputcsv($fp, $fields);
}
fclose($fp);
?>
And here is my csv file (I use Excel)
My question: is it possible to have the cities in A column and the countries in B column?
Thanks you for your help
You need to tell your spreadsheet program that the columns are separated by commas.
You will probably get the option to nominate a delimiter on opening the file.
I think you also have an option on a column - something like "Text to columns"
You can tell fputcsv() to use a different string as the delimiter instead of comma. This will use TAB, which is probably Excel's default:
fputcsv($fp, $fields, "\t");
I have seen few similar examples but it is still not working.
csv data file "data1.csv" is as below:
symbol,num1,num2
QCOM,10,100
QCOM,20,200
QCOM,30,300
QCOM,40,400
CTSH,10,111
CTSH,20,222
CTSH,30,333
CTSH,40,444
AAPL,10,11
AAPL,20,22
AAPL,30,33
AAPL,40,44
--end of file ----
$inputsymbol = QCOM ; // $inputsymbol will come from html.works fine.
I want to read the csv file and fetch lines that matches symbol = QCOM. and convert it in to array $data1 to plot line chart for num1 and num2 as below.
$data1 = array (
array(10,100),
array(20,200),
array(30,300),
array(40,400)
);
Note: 1. no comma at the end of each csv lines in csv datafile.
2. Multiple symbols in same file. so the lines that match symbols only
should be included in $data1.
==============
Mark's soluition solves the problem. Now to make the data access faster (for a very large csv file), I have (externally) formatted same data as below. Question is how it can automatically extract headers and then for the data1 array?
symbol,1/1/2015,1/2/2015,1/3/2015,1/4/2015
QCOM,100,200,300,400
CTSH,11,22,33,44
AAPL,10,11,12,13
Note that the number of fields in header is not fixed. (it will increase every month). But the data will also increse accordingly.
Not complicated:
$inputsymbol = 'QCOM';
$data1 = [];
$fh = fopen("data1.csv", "r"));
while (($data = fgetcsv($fh, 1024)) !== FALSE) {
if ($data[0] == $inputsymbol) {
unset($data[0]);
$data1[] = $data;
}
}
fclose($fh);
So where exactly are you having the problem?
Is it possible to write at a particular location in a CSV file using PHP?
I don't want to append data at the end of the CSV file. But I want to add data at the end of a row already having values in the CSV.
thanks in advance
No, it s not possible to insert new data in the middle of a file, due to filesystem nature.
Only append at the end is possible.
So, the only solution is to make another file, write a beginning part of source, append a new value, and then append the rest of the source file. And finally rename a resulting file to original name.
There you go. Complete working code:
<?php
//A helping function to insert data at any position in array.
function array_insert($array, $pos, $val)
{
$array2 = array_splice($array, $pos);
$array[] = $val;
$array = array_merge($array, $array2);
return $array;
}
//What and where you want to insert
$DataToInsert = '11,Shamit,Male';
$PositionToInsert = 3;
//Full path & Name of the CSV File
$FileName = 'data.csv';
//Read the file and get is as a array of lines.
$arrLines = file($FileName);
//Insert data into this array.
$Result = array_insert($arrLines, $PositionToInsert, $DataToInsert);
//Convert result array to string.
$ResultStr = implode("\n", $Result);
//Write to the file.
file_put_contents($FileName, $ResultStr);
?>
Technically Col. Shrapnel's answer is absolutely right.
Your problem is that you don't want to deal with all these file operations just to change some data. I agree with you. But you're looking for the solution in a wrong level. Put this problem in a higher level. Create a model that represents an entity in your CSV database. Modify the model's state and call its save() method. The method should be responsible to write your model's state in CSV format.
Still, you can use a CSV library that abstracts low level operations for you. For instance, parsecsv-for-php allows you to target a specific cell:
$csv = new parseCSV();
$csv->sort_by = 'id';
$csv->parse('data.csv');
# "4" is the value of the "id" column of the CSV row
$csv->data[4]['firstname'] = 'John';
$csv->save();