Question

I need help to generate a tree of categories from a CSV file.

I tried many things, but I get lost …

I have a file of 800 lines that looks like this:

"LOADERS", "S130", "Above & 524611001, 524711001 & Above", "MAINTENANCE ITEMS", "SCHEDULED MAINTENANCE ITEMS (500 HOUR)"
"LOADERS", "S130", "Above & 524611001, 524711001 & Above", "MAINTENANCE ITEMS", "SCHEDULED MAINTENANCE ITEMS (1000 HOUR)"
"LOADERS", "S130", "Above & 524611001, 524711001 & Above", "MAIN FRAME", "OPERATOR CAB"

On those lines,
Column 1 represents the parent class
Column 2 is the child of Column 1
Column 3 is the child of Column 2
Column 3 is the mother of Column 4 (but it’s an explode (‘,’, Column 3))
Explode in column 4 are the mothers of 5

I would like to generate an array of this type (and created an ID starting at 50) because the goal is to convert this file into a mysql DB: s

I would succeed in having something like this

LOADERS (id = 50)
|___S130 (id = 51)
|----|____Above & 524611001 (id = 52)
|-----------|____ MAINTENANCE ITEMS (id = 53)
|------------------|____SCHEDULED MAINTENANCE ITEMS (500 HOUR) (id = 54)
|------------------|____SCHEDULED MAINTENANCE ITEMS (1000 HOUR) (id = 55)
|-----------|____ MAIN FRAME (id = 56)
|------------------|____OPERATOR CAB (id = 57)
|----|____Above & 524711001 (id = 58)
|-----------|____ MAINTENANCE ITEMS (id = 59)
|------------------|____SCHEDULED MAINTENANCE ITEMS (500 HOUR) (id = 60)
|------------------|____SCHEDULED MAINTENANCE ITEMS (1000 HOUR) (id = 61)
|-----------|____ MAIN FRAME (id = 62)
|------------------|____OPERATOR CAB (id = 63)

I tried a bunch of method and I begin to despair. Everything I did not even approaching the desired result: s I sweat on it since Monday and I want to hang myself.

Answer 1

Try something like this:

<?php
// generate categories tree with csv file
// http://stackoverflow.com/questions/7498119/generate-categories-tree-with-csv-file

$big_array  = array();
$temp_array = array();

$csv = <<< CSV
"LOADERS", "S130", "Above & 524611001, 524711001 & Above", "MAINTENANCE ITEMS", "SCHEDULED MAINTENANCE ITEMS (500 HOUR)"
"LOADERS", "S130", "Above & 524611001, 524711001 & Above", "MAINTENANCE ITEMS", "SCHEDULED MAINTENANCE ITEMS (1000 HOUR)"
"LOADERS", "S130", "Above & 524611001, 524711001 & Above", "MAIN FRAME", "OPERATOR CAB"
CSV;

foreach(preg_split("/(\r?\n)/", $csv) as $line) {

    list($column1, $column2, $column3, $column4) = explode('", "', $line);

    $column1 = preg_replace('/^"/', '', $column1);
    $column4  = preg_replace('/\"(?<!\\")/', '', $column4);

    foreach(explode(', ', $column3) as $column3_part) {
        $temp_array[$column3_part][] = $column4;
    }


    $big_array[$column1][$column2] = $temp_array;
}

echo '<pre>' . print_r($big_array, 1) . '</pre><hr />';

$counter = 50;
foreach($big_array as $key1 => $level1) {
    foreach($level1 as $key2 => $level2) {
        foreach($level2 as $key3 => $level4) {
            foreach($level4 as $level5) {

                echo '<pre>' . print_r('INSERT INTO DATABASE: ' . $counter . ', ' . $key1 . ', ' . $key2 . ', ' . $key3 . ', ' . $level5, 1) . '</pre>';
                $counter++;
            }
        }
    }
}
?>