PHP code to import from CSV file to MySQL

By: Nate

After playing a while, I'm confident the following replacement function works in all cases, including the ones for which the native fputcsv function fails. If fputcsv fails to work for you (particularly with mysql csv imports), try this function as a drop-in replacement instead.

Arguments to pass in are exactly the same as for fputcsv, though I have added an additional $mysql_null boolean which allows one to turn php null's into mysql-insertable nulls (by default, this add-on is disabled, thus working identically to fputcsv [except this one works!]).


<?php 

function fputcsv2 ($fh, array $fields, $delimiter = ',', $enclosure = '"', $mysql_null = false) { 
    $delimiter_esc = preg_quote($delimiter, '/'); 
    $enclosure_esc = preg_quote($enclosure, '/'); 

    $output = array(); 
    foreach ($fields as $field) { 
        if ($field === null && $mysql_null) { 
            $output[] = 'NULL'; 
            continue; 
        } 

        $output[] = preg_match("/(?:${delimiter_esc}|${enclosure_esc}|\s)/", $field) ? ( 
            $enclosure . str_replace($enclosure, $enclosure . $enclosure, $field) . $enclosure 
        ) : $field; 
    } 

    fwrite($fh, join($delimiter, $output) . "\n"); 
} 

// the _EXACT_ LOAD DATA INFILE command to use 
// (if you pass in something different for $delimiter 
// and/or $enclosure above, change them here too; 
// but _LEAVE ESCAPED BY EMPTY!_). 
/* 
LOAD DATA INFILE 
    '/path/to/file.csv' 

INTO TABLE 
    my_table 

FIELDS TERMINATED BY 
    ',' 

OPTIONALLY ENCLOSED BY 
    '"' 

ESCAPED BY 
    '' 

LINES TERMINATED BY 
    '\n' 
*/ 

?>