Mass convert encodings of files with selected extensions in a folder recursively.

mass_convert_encoding.php

#!/usr/bin/php
<?php
if (count($argv) < 6) {
    echo '
Usage :

> php ' . $_SERVER['SCRIPT_FILENAME'] . '
    source_folder
	destination_folder
	source_charset
	destination_charset
	file_types

Example:
    php ' . $_SERVER['SCRIPT_FILENAME'] . '
    	"etc/something"
    	"etc/something_utf8"
    	"iso-8859-9"
    	"utf-8"
    	"php, php3, inc, phtml, html, htm, js"

';
    exit;
} else {
    $source_folder_i       = trim($argv[1]);
    $destination_folder_i  = trim($argv[2]);
    $source_charset_i      = trim($argv[3]);
    $destination_charset_i = trim($argv[4]);
    $file_types_i          = trim($argv[5]);
    $file_types_i          = explode(',', $file_types_i);
    foreach ($file_types_i as $k => $v) {
        $file_types_i[$k] = trim($v);
        if ($file_types_i[$k] == '') {
            unset($file_types_i[$k]);
        }
    }
    if (count($file_types_i) < 1) {
        echo 'Specify at least one file type.';
        exit;
    }
    /*
    var_dump($source_folder_i);echo "\r\n";
    var_dump($destination_folder_i);echo "\r\n";
    var_dump($source_charset_i);echo "\r\n";
    var_dump($destination_charset_i);echo "\r\n";
    var_dump($file_types_i);echo "\r\n";
    exit;
    */

    $result = process_folder(
        $source_folder_i,
        $destination_folder_i,
        $source_charset_i,
        $destination_charset_i,
        $file_types_i
    );
    if ($result['result']) {
        echo PHP_EOL . 'OK.' . PHP_EOL;
    } else {
        echo PHP_EOL . 'ERROR OCCURRED : ' . $result['msg'] . PHP_EOL;
    }

    function process_folder(
        $source_folder,
        $destination_folder,
        $source_charset,
        $destination_charset,
        $file_types
    ) {
        $source_folder = rtrim($source_folder, DIRECTORY_SEPARATOR);
        $source_folder .= DIRECTORY_SEPARATOR;
        $destination_folder = rtrim($destination_folder, DIRECTORY_SEPARATOR);
        $destination_folder .= DIRECTORY_SEPARATOR;
        if (!is_dir($destination_folder)) {
            if (!mkdir($destination_folder)) {
                return array(
                    'result' => false,
                    'msg'    => $destination_folder . ' cannot be created.'
                );
            }
        }
        if (is_dir($source_folder)) {
            if ($dh = opendir($source_folder)) {
                while (($file = readdir($dh)) !== false) {
                    $path = $source_folder . $file;
                    if ($file == '.' || $file == '..') {
                        continue;
                    }
                    if (is_dir($path)) {
                        process_folder(
                            $path,
                            $destination_folder . $file,
                            $source_charset,
                            $destination_charset,
                            $file_types
                        );
                    } else {
                        $type = pathinfo($path, PATHINFO_EXTENSION);
                        if ($type !== false) {
                            if (in_array($type, $file_types, true)) {
                                $content = file_get_contents($path);
                                if ($content !== false) {
                                    $content = mb_convert_encoding(
                                        $content,
                                        $destination_charset,
                                        $source_charset
                                    );
                                    if ($content !== false) {
                                        if (file_put_contents(
                                            $destination_folder . $file,
                                            $content
                                        )
                                        ) {
                                            echo $path
                                                . ' (' . filesize($path) . ' B)'
                                                . ' is OK.' . PHP_EOL;
                                        } else {
                                            return array(
                                                'result' => false,
                                                'msg'    => 'file_put_contents problem.'
                                            );
                                        }
                                    } else {
                                        return array(
                                            'result' => false,
                                            'msg'    => 'mb_convert_encoding problem.'
                                        );
                                    }
                                } else {
                                    return array(
                                        'result' => false,
                                        'msg'    => 'file_get_contents problem.'
                                    );
                                }
                            } else {
                                if (copy($path, $destination_folder . $file)) {
                                    echo $path . ' copied as-is.' . PHP_EOL;
                                } else {
                                    return array(
                                        'result' => false,
                                        'msg'    => $path . ' cannot be copied to '
                                        . $destination_folder . $file . '.'
                                    );
                                }
                            }
                        } else {
                            return array(
                                'result' => false,
                                'msg'    => 'pathinfo problem.'
                            );
                        }
                    }
                }
                closedir($dh);
            } else {
                return array('result' => false, 'msg' => 'opendir problem.');
            }
        } else {
            return array(
                'result' => false,
                'msg'    => $source_folder . ' is not a folder.'
            );
        }

        return array('result' => true);
    }
}