str_getcsv into a multidimensional array in php - php

Question

I have csv values like this:
$csv_data = "test,this,thing
hi,there,this
is,cool,dude
have,fun";
I want to take an entire CSV string and read it into a multidemensional array so that I get:
array(
array(
'test' => 'hi',
'this' => 'there',
'thing' => 'this'
),
array(
'test' => 'is',
'this' => 'cool',
'thing' => 'dude'
),
array(
'test' => 'have',
'this' => 'fun',
'thing' => ''
)
);
I want an output like that, take note that the CSV value is dynamic.

Answer 1

Assuming every row in the CSV data has the same number of columns, this should work.
$lines = explode("\n", $csv_data);
$head = str_getcsv(array_shift($lines));
$array = array();
foreach ($lines as $line) {
$array[] = array_combine($head, str_getcsv($line));
}
If lines have a variable number of columns (as in your example, where the last line has 2 columns instead of 3), use this loop instead:
foreach ($lines as $line) {
$row = array_pad(str_getcsv($line), count($head), '');
$array[] = array_combine($head, $row);
}

Answer 2

Here is a complete solution:
$lines = explode("\n", $csv_data);
$formatting = explode(",", $lines[0]);
unset($lines[0]);
$results = array();
foreach ( $lines as $line ) {
$parsedLine = str_getcsv( $line, ',' );
$result = array();
foreach ( $formatting as $index => $caption ) {
if(isset($parsedLine[$index])) {
$result[$formatting[$index]] = trim($parsedLine[$index]);
} else {
$result[$formatting[$index]] = '';
}
}
$results[] = $result;
}
So what are we doing here?
First, your CSV data is split into array of lines with explode
Since the first row in your CSV describes data format, it must be separated from the actual data rows (explode and unset)
For storing the results, we initialize a new array ($results)
Foreach is used to iterate through the data line by line. For each line:
Line is parsed with PHP's str_getcsv
An empty result array is initialized
Each line is inspected in the light of the format. Cells are added and missing columns are padded with empty strings.

Answer 3

Here is a very clean and simple solution:
function parse_row($row) {
return array_map('trim', explode(',', $row));
}
$rows = str_getcsv($csv_data, "\n");
$keys = parse_row(array_shift($rows));
$result = array();
foreach ($rows as $row) {
$row = parse_row($row);
$row = array_pad($row, 3, NULL);
$result[] = array_combine($keys, $row);
}