note 100281 added to function.fgetcsv
| From: | jack dot peterson at gmail dot com | Date: | Tue, 05 Oct 2010 23:30:54 +0000 |
| Subject: | note 100281 added to function.fgetcsv | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-172991@lists.php.net to get a copy of this message | ||
If you receive data in the following format:
Time,Dataset1,Dataset2,
timestamp1,item 1 for dataset 1,item1 for dataset2
timestamp2,item 2 for dataset 1,item2 for dataset2
the following code will output a series of arrays grouped by column with the resulting format:
array (
[column 1 title] => array (
[timestamp1] => item1 for dataset1
[timestamp2] => item2 for dataset1
)
[column 2 title] => array (
[timestamp1] => item1 for dataset2
[timestamp2] => item2 for dataset2
)
)
<?php
# Open the File.
if (($handle = fopen("rawdata.csv", "r")) !== FALSE) {
# Set the parent multidimensional array key to 0.
$nn = 0;
while (($data = fgetcsv($handle, 0, ",")) !== FALSE) {
# Count the total keys in the row.
$c = count($data);
# Populate the multidimensional array.
for ($x=0;$x<$c;$x++)
{
$csvarray[$nn][$x] = $data[$x];
}
$nn++;
}
# Close the File.
fclose($handle);
}
// take the row'ified data and columnize the array
function columnizeArray($csvarray) {
$array = array();
foreach($csvarray as $key=>$value) {
// reparse into useful array data.
if ($key == 0) {
foreach ($value AS $key2=>$value2) {
$array[$key2] = array();
$array[$key2][] = $value2;
}
}else if ($key > 0){
foreach ($value as $key3=>$value3) {
$array[$key3][] = $value3;
}
}else{
}
}
return $array;
}
function groupColumns($array = null) {
$array2 = array();
foreach ($array as $k=>$v) {
// procss each column
// $k = column number
// $v = array of rows
if ($k == 0) {}else{ // working on column 2 or higher
$array2[$v[0]] = array();
foreach ($array[0] as $k1=>$v1) {
if ($v1 > 0) { // ignore the column heading
// store the first column variable in as the key.
// Store the value associated with this item as the value.
$array2[$v[0]][$v1] = $v[$k1];
}
}
}
}
return $array2;
}
$array2 = groupColumns(columnizeArray($csvarray));
print_r($array2);
?>
----
Server IP: 208.69.120.55
Probable Submitter: 209.119.212.6
----
Manual Page -- http://www.php.net/manual/en/function.fgetcsv.php
Edit -- https://master.php.net/note/edit/100281
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