PHP Read from a CSV-file - php

Question

I have a simple CSV-file which looks like this:
Value:
AAA
Value:
BBB
Value:
AAA
I want to count the number of times a certain value shows up (e.g. AAA).
To start, I want to get the lines which read "Value:" and just echo the following line "line[$i+1] which would be the corresponding value.
Here's the code:
<?php
$file_handle = fopen("rowa.csv", "r");
$i = 0;
while (!feof($file_handle) ) {
$line_of_text = fgetcsv($file_handle, 1024);
$line[$i] = $line_of_text[0];
if($line[$i] == "Value:"){
echo $line[$i+1]."<br />";
}
$i++;
}
fclose($file_handle);
?>
The outcome should look like this:
AAA
BBB
AAA
Unfortunately, this doesn't work..It just gives me "<*br /">s

Answer 1

If you are printing on command line or a file, you need to use \n instead of <br/>. That only works if your output is HTML. Also every time you want to move two lines. the logic should look like this:
if($line[$i] == "Value:"){
echo $line[$i+1]."\n"; // add a new line
}
$i+=2; // you want to move two lines

Answer 2

This doesn't look like a normal everyday CSV file, but here's an example that should work.
$fh = fopen('rowa.csv', 'r');
$OUT = array();
$C = 0;
while( ! feof($fh) ) {
// read 1 line, trim new line characters.
$line = trim(fgets($fh, 1024));
// skip empty lines
if ( empty($line) ) continue;
// if it's a value line we increase the counter & skip to next line
if( $line === 'Value:' ) {
$C++;
continue;
}
// append contents to array using the counter as an index
$OUT[$C] = $line;
}
fclose($fh);
var_dump($OUT);

Answer 3

This is not a CSV file. The file() command will load the lines of a file into an array. The for loop prints every second line.
$lines = file("thefile.txt");
for ($i = 1; $i < count($lines); $i = $i + 2) {
echo $lines[$i] . "<br/>" . PHP_EOL;
}

Answer 4

As PHP.net example provides, you can use this modified code:
<?php
$count = 0;
if (($handle = fopen("test.csv", "r")) !== FALSE)
{
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE)
{
$num = count($data);
for ($c=0; $c < $num; $c++)
{
if (!strcmp($data[$c], 'Value:')) continue;
if (!strcmp($data[$c], 'AAA')) $count++;
echo $data[$c] . "<br />\n";
}
}
fclose($handle);
}
?>
UPDATE
Try this new code, we use the value as array key and increment the count for that "key".
<?php
$counts = array();
if (($handle = fopen("test.csv", "r")) !== FALSE)
{
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE)
{
$num = count($data);
for ($c=0; $c < $num; $c++)
{
if (strcmp($data[$c], 'Value:'))
{
if (!isset($counts[$data[$c]]))
{
$counts[$data[$c]] = 0;
}
$counts[$data[$c]]++;
}
else
{
// Do something
}
}
}
fclose($handle);
}
var_dump($counts);
?>
You can print the array like this:
foreach ($counts as $key => $count)
{
printf('%s: %d<br/>' . "\n", $key, $count);
}