CSV to Associative Array - php

Question

I've seen numerous examples on how to take a CSV file and then create an associative array with the headers as the keys.
For example:
Brand,Model,Part,Test
Honda,Civic,123,244
Honda,Civic,135,434
Toyota,Supra,511,664
Where it would create an Array such as Array[$num][$key] where $key would be Brand, Model, Part, Test.
So If I wanted to access the test value "434" I would have to loop every index in the array and then ignore any Brands that were not honda, and any models that were not Civic
What I need to do is access the value most directly, instead of running through a for loop going through each $num index. I want to be able to access the value test "434" with:
Array['Honda']['Civic']['135']
or control a for statement with looping through every model Honda has... something like
foreach $model in Array['Honda']
At the very least I need to be able to go through every model given a known Brand and access all the relative info for each.
Edit:
Just to confirm I was setting this up an example. My actually data has headers like:
brand model part price shipping description footnote
Of which I need to access all the information tied to the part (price, shipping,desc, footnote)

Answer 1

Too many long solutions. I've always found this to be the simplest:
<?php
/* Map Rows and Loop Through Them */
$rows = array_map('str_getcsv', file('file.csv'));
$header = array_shift($rows);
$csv = array();
foreach($rows as $row) {
$csv[] = array_combine($header, $row);
}
?>

Answer 2

run over the csv file line by line, and insert to array like:
$array = $fields = array(); $i = 0;
$handle = #fopen("file.csv", "r");
if ($handle) {
while (($row = fgetcsv($handle, 4096)) !== false) {
if (empty($fields)) {
$fields = $row;
continue;
}
foreach ($row as $k=>$value) {
$array[$i][$fields[$k]] = $value;
}
$i++;
}
if (!feof($handle)) {
echo "Error: unexpected fgets() fail\n";
}
fclose($handle);
}

Answer 3

To create an associative list array use something like:
$keys = fgetcsv($f);
while (!feof($f)) {
$array[] = array_combine($keys, fgetcsv($f));
}
And to traverse and filter by specific attributes write a function like:
function find($find) {
foreach ($array as $row) {
if (array_intersect_assoc($row, $find) == $find) {
$result[] = $row;
}
}
}
Where you would invoke it with $find = array(Brand=>Honda, Model=>Civic, Part=>135) to filter out the searched models. The other positional array structure seems not very workable, unless you only want to access the "Test" attribute.

Answer 4

Try this simple algorithm:
$assocData = array();
if( ($handle = fopen( $importedCSVFile, "r")) !== FALSE) {
$rowCounter = 0;
while (($rowData = fgetcsv($handle, 0, ",")) !== FALSE) {
if( 0 === $rowCounter) {
$headerRecord = $rowData;
} else {
foreach( $rowData as $key => $value) {
$assocData[ $rowCounter - 1][ $headerRecord[ $key] ] = $value;
}
}
$rowCounter++;
}
fclose($handle);
}
var_dump( $assocData);

Answer 5

Using fgetcsv() seems the most direct and sensible tool for the job.
csv.csv contents:
Brand,Model,Part,Test
Honda,Civic,123,244
Honda,Civic,135,434
Toyota,Supra,511,664
Code:
$assoc_array = [];
if (($handle = fopen("csv.csv", "r")) !== false) { // open for reading
if (($data = fgetcsv($handle, 1000, ",")) !== false) { // extract header data
$keys = $data; // save as keys
}
while (($data = fgetcsv($handle, 1000, ",")) !== false) { // loop remaining rows of data
$assoc_array[] = array_combine($keys, $data); // push associative subarrays
}
fclose($handle); // close when done
}
echo "<pre>";
var_export($assoc_array); // print to screen
echo "</pre>";
Output:
array (
0 =>
array (
'Brand' => 'Honda',
'Model' => 'Civic',
'Part' => '123',
'Test' => '244',
),
1 =>
array (
'Brand' => 'Honda',
'Model' => 'Civic',
'Part' => '135',
'Test' => '434',
),
2 =>
array (
'Brand' => 'Toyota',
'Model' => 'Supra',
'Part' => '511',
'Test' => '664',
),
)
Resource: http://php.net/manual/en/function.fgetcsv.php

Answer 6

Here is a solutions that will work by specifying a local file or URL. You can also switch the association on and off. Hopefully this helps.
class CSVData{
public $file;
public $data;
public $fp;
public $caption=true;
public function CSVData($file=''){
if ($file!='') getData($file);
}
function getData($file){
if (strpos($file, 'tp://')!==false){
copy ($file, '/tmp/csvdata.csv');
if ($this->fp=fopen('/tmp/csvdata.csv', 'r')!==FALSE){
$this->readCSV();
unlink('tmp/csvdata.csv');
}
} else {
$this->fp=fopen($file, 'r');
$this->readCSV();
}
fclose($this->fp);
}
private function readCSV(){
if ($this->caption==true){
if (($captions=fgetcsv($this->fp, 1000, ","))==false) return false;
}
$row=0;
while (($data = fgetcsv($this->fp, 1000, ",")) !== FALSE) {
for ($c=0; $c < count($data); $c++) {
$this->data[$row][$c]=$data[$c];
if ($this->caption==true){
$this->data[$row][$captions[$c]]=$data[$c];
}
}
$row++;
}
}
}
Try this usage:
$o=new CSVData();
$o->getData('/home/site/datafile.csv');
$data=$o->data;
print_r($data);

Answer 7

Here is my solution, similar to others stated but uses a while loop with fgetcsv, and uses a counter and array_combine to set the first row as the keys.
$rownum = 0;
while (($row = fgetcsv($openedFile, 1000, ',')) !== FALSE) {
if ($rownum > 0) {
$row = array_combine($importarray[0], $row);
}
array_push($importarray, $row);
$rownum++;
}
array_shift($importarray);