currency:
set($currency):
Set the currency to be used in overall site.
public function set($currency) {
$this->code = $currency;
if ((!isset($this->session->data['currency'])) || ($this->session->data['currency'] != $currency)) {
$this->session->data['currency'] = $currency;
}
if ((!isset($this->request->cookie['currency'])) || ($this->request->cookie['currency'] != $currency)) {
setcookie('currency', $currency, time() + 60 * 60 * 24 * 30, '/', $this->request->server['HTTP_HOST']);
}
}
format($number, $currency = '', $value = '', $format = TRUE):
public function format($number, $currency = '', $value = '', $format = TRUE) {
if ($currency && $this->has($currency)) {
$symbol_left = $this->currencies[$currency]['symbol_left'];
$symbol_right = $this->currencies[$currency]['symbol_right'];
$decimal_place = $this->currencies[$currency]['decimal_place'];
} else {
$symbol_left = $this->currencies[$this->code]['symbol_left'];
$symbol_right = $this->currencies[$this->code]['symbol_right'];
$decimal_place = $this->currencies[$this->code]['decimal_place'];
$currency = $this->code;
}
if ($value) {
$value = $value;
} else {
$value = $this->currencies[$currency]['value'];
}
if ($value) {
$value = $number * $value;
} else {
$value = $number;
}
$string = '';
if (($symbol_left) && ($format)) {
$string .= $symbol_left;
}
if ($format) {
$decimal_point = $this->language->get('decimal_point');
} else {
$decimal_point = '.';
}
if ($format) {
$thousand_point = $this->language->get('thousand_point');
} else {
$thousand_point = '';
}
$string .= number_format(round($value, (int)$decimal_place), (int)$decimal_place, $decimal_point, $thousand_point);
if (($symbol_right) && ($format)) {
$string .= $symbol_right;
}
return $string;
}
convert($value, $from, $to):
Convert the given value from once currency to other. The parameters are $value means of what amount and $from means of which currency and $to mean to which currency is the value to be converted.
public function convert($value, $from, $to) {
if (isset($this->currencies[$from])) {
$from = $this->currencies[$from]['value'];
} else {
$from = 0;
}
if (isset($this->currencies[$to])) {
$to = $this->currencies[$to]['value'];
} else {
$to = 0;
}
return $value * ($to / $from);
}
getId():
Returns the currency ID.
public function getId() {
return $this->currencies[$this->code]['currency_id'];
}
getCode():
Returns the currency code.
public function getCode() {
return $this->code;
}
getValue($currency):
If the currency is set then returns the value nor it will return zero.
public function getValue($currency) {
if (isset($this->currencies[$currency])) {
return $this->currencies[$currency]['value'];
} else {
return 0;
}
}
has($currency):
Whether the request currency is available or not.
public function has($currency) {
return isset($this->currencies[$currency]);
}
customer:
login($email, $password):
Check whether the customer is approved and check whether the username and password is correct or not.
public function login($email, $password) {
if (!$this->config->get('config_customer_approval')) {
$customer_query = $this->db->query("SELECT * FROM " . DB_PREFIX . "customer WHERE LOWER(email) = '" . $this->db->escape(strtolower($email)) . "' AND password = '" . $this->db->escape(md5($password)) . "' AND status = '1'");
} else {
$customer_query = $this->db->query("SELECT * FROM " . DB_PREFIX . "customer WHERE LOWER(email) = '" . $this->db->escape(strtolower($email)) . "' AND password = '" . $this->db->escape(md5($password)) . "' AND status = '1' AND approved = '1'");
}
if ($customer_query->num_rows) {
$this->session->data['customer_id'] = $customer_query->row['customer_id'];
if (($customer_query->row['cart']) && (is_string($customer_query->row['cart']))) {
$cart = unserialize($customer_query->row['cart']);
foreach ($cart as $key => $value) {
if (!array_key_exists($key, $this->session->data['cart'])) {
$this->session->data['cart'][$key] = $value;
} else {
$this->session->data['cart'][$key] += $value;
}
}
}
$this->customer_id = $customer_query->row['customer_id'];
$this->firstname = $customer_query->row['firstname'];
$this->lastname = $customer_query->row['lastname'];
$this->email = $customer_query->row['email'];
$this->telephone = $customer_query->row['telephone'];
$this->fax = $customer_query->row['fax'];
$this->newsletter = $customer_query->row['newsletter'];
$this->customer_group_id = $customer_query->row['customer_group_id'];
$this->address_id = $customer_query->row['address_id'];
return TRUE;
} else {
return FALSE;
}
}
logout():
Destroy all the session of the logged customer.
public function logout() {
unset($this->session->data['customer_id']);
$this->customer_id = '';
$this->firstname = '';
$this->lastname = '';
$this->email = '';
$this->telephone = '';
$this->fax = '';
$this->newsletter = '';
$this->customer_group_id = '';
$this->address_id = '';
session_destroy();
}
isLogged():
Check whether the customer is logged in or not.
public function isLogged() {
return $this->customer_id;
}
getId(), getFirstName(), getLastName(), getEmail(), getTelephone(), getFax(), getNewsletter(), getCustomerGroupId(), getAddressId():
Returns the customer information like for ID we have to write $this->customer->getId().
public function getId() {
return $this->customer_id;
}
public function getFirstName() {
return $this->firstname;
}
public function getLastName() {
return $this->lastname;
}
public function getEmail() {
return $this->email;
}
public function getTelephone() {
return $this->telephone;
}
public function getFax() {
return $this->fax;
}
public function getNewsletter() {
return $this->newsletter;
}
public function getCustomerGroupId() {
return $this->customer_group_id;
}
public function getAddressId() {
return $this->address_id;
}
db:
query($sql):
$this->db->query(“Select * from product”); This returns all the product available in the database
public function query($sql) {
return $this->driver->query($sql);
}
escape($value):
public function escape($value) {
return $this->driver->escape($value);
}
countAffected():
public function countAffected() {
return $this->driver->countAffected();
}
getLastId():
Last affected or inserted or deleted Id is returned.
public function getLastId() {
return $this->driver->getLastId();
}
document:
setTitle($title):
The title of the page is set with the call of $this->document->setTitle($title); where $title is the parameter which take the string.
public function setTitle($title) {
$this->title = $title;
}
getTitle():
$this->document->setTitle() means the title is get and set to <title> of the document
public function getTitle() {
return $this->title;
}
setDescription($description):
$this->document->setDescription($description) which set the description of the page.
public function setDescription($description) {
$this->description = $description;
}
getDescription():
$this->document->getDescription() gives us the description of the document which is embedded in the <head> of the document
public function getDescription() {
return $this->description;
}
setKeywords($keywords):
$this->document->setKeywords($keywords) set the SEO keywords
public function setKeywords($keywords) {
$this->keywords = $keywords;
}
getKeywords():
$this->document->getKeywords() get the keywords which are set for the page.
public function getKeywords() {
return $this->keywords;
}
setBase($base):
$this->document->setBase($base) the base url for the document. If we need different base url then we have to set it.
public function setBase($base) {
$this->base = $base;
}
getBase():
Retrieve the set base url
public function getBase() {
return $this->base;
}
setCharset($charset):
public function setCharset($charset) {
$this->charset = $charset;
}
getCharset():
public function getCharset() {
return $this->charset;
}
setLanguage($language):
public function setLanguage($language) {
$this->language = $language;
}
getLanguage():
public function getLanguage() {
return $this->language;
}
setDirection($direction):
public function setDirection($direction) {
$this->direction = $direction;
}
getDirection():
public function getDirection() {
return $this->direction;
}
addLink($href, $rel):
public function addLink($href, $rel) {
$this->links[] = array(
'href' => $href,
'rel' => $rel
);
}
getLinks():
public function getLinks() {
return $this->links;
}
addStyle($href, $rel = 'stylesheet', $media = 'screen'):
public function addStyle($href, $rel = 'stylesheet', $media = 'screen') {
$this->styles[] = array(
'href' => $href,
'rel' => $rel,
'media' => $media
);
}
getStyles():
public function getStyles() {
return $this->styles;
}
addScript($script):
public function addScript($script) {
$this->scripts[] = $script;
}
getScripts():
public function getScripts() {
return $this->scripts;
}
addBreadcrumb($text, $href, $separator = ' > '):
public function addBreadcrumb($text, $href, $separator = ' > ') {
$this->breadcrumbs[] = array(
'text' => $text,
'href' => $href,
'separator' => $separator
);
}
getBreadcrumbs():
public function getBreadcrumbs() {
return $this->breadcrumbs;
}
encryption:
encrypt($value):
function encrypt($value) {
if (!$this->key) {
return $value;
}
$output = '';
for ($i = 0; $i < strlen($value); $i++) {
$char = substr($value, $i, 1);
$keychar = substr($this->key, ($i % strlen($this->key)) - 1, 1);
$char = chr(ord($char) + ord($keychar));
$output .= $char;
}
return base64_encode($output);
}
We pass the value and the value is converted to the base64_encode
base64_encode()
decrypt($value):
The encrypted value is gained after decryption.
function decrypt($value) {
if (!$this->key) {
return $value;
}
$output = '';
$value = base64_decode($value);
for ($i = 0; $i < strlen($value); $i++) {
$char = substr($value, $i, 1);
$keychar = substr($this->key, ($i % strlen($this->key)) - 1, 1);
$char = chr(ord($char) - ord($keychar));
$output .= $char;
}
return $output;
}
image:
create($image):
Creation of the image and use of the image create from different type of image like gif, png, jpeg etc
private function create($image) {
$mime = $this->info['mime'];
if ($mime == 'image/gif') {
return imagecreatefromgif($image);
} elseif ($mime == 'image/png') {
return imagecreatefrompng($image);
} elseif ($mime == 'image/jpeg') {
return imagecreatefromjpeg($image);
}
}
save($file, $quality = 100):
Save file that are of gif, jpeg, jpg
public function save($file, $quality = 100) {
$info = pathinfo($file);
$extension = $info['extension'];
if ($extension == 'jpeg' || $extension == 'jpg') {
imagejpeg($this->image, $file, $quality);
} elseif($extension == 'png') {
imagepng($this->image, $file, 0);
} elseif($extension == 'gif') {
imagegif($this->image, $file);
}
imagedestroy($this->image);
}
resize($width = 0, $height = 0):
Resize the image function
public function resize($width = 0, $height = 0) {
if (!$this->info['width'] || !$this->info['height']) {
return;
}
$xpos = 0;
$ypos = 0;
$scale = min($width / $this->info['width'], $height / $this->info['height']);
if ($scale == 1) {
return;
}
$new_width = (int)($this->info['width'] * $scale);
$new_height = (int)($this->info['height'] * $scale);
$xpos = (int)(($width - $new_width) / 2);
$ypos = (int)(($height - $new_height) / 2);
$image_old = $this->image;
$this->image = imagecreatetruecolor($width, $height);
if (isset($this->info['mime']) && $this->info['mime'] == 'image/png') {
imagealphablending($this->image, false);
imagesavealpha($this->image, true);
$background = imagecolorallocatealpha($this->image, 255, 255, 255, 127);
imagecolortransparent($this->image, $background);
} else {
$background = imagecolorallocate($this->image, 255, 255, 255);
}
imagefilledrectangle($this->image, 0, 0, $width, $height, $background);
imagecopyresampled($this->image, $image_old, $xpos, $ypos, 0, 0, $new_width, $new_height, $this->info['width'], $this->info['height']);
imagedestroy($image_old);
$this->info['width'] = $width;
$this->info['height'] = $height;
}
watermark($file, $position = 'bottomright'):
Function to watermark the image may be with the name of the site or anything you like the value to pass is for the $watermark
public function watermark($file, $position = 'bottomright') {
$watermark = $this->create($file);
$watermark_width = imagesx($watermark);
$watermark_height = imagesy($watermark);
switch($position) {
case 'topleft':
$watermark_pos_x = 0;
$watermark_pos_y = 0;
break;
case 'topright':
$watermark_pos_x = $this->info['width'] - $watermark_width;
$watermark_pos_y = 0;
break;
case 'bottomleft':
$watermark_pos_x = 0;
$watermark_pos_y = $this->info['height'] - $watermark_height;
break;
case 'bottomright':
$watermark_pos_x = $this->info['width'] - $watermark_width;
$watermark_pos_y = $this->info['height'] - $watermark_height;
break;
}
imagecopy($this->image, $watermark, $watermark_pos_x, $watermark_pos_y, 0, 0, 120, 40);
imagedestroy($watermark);
}
crop($top_x, $top_y, $bottom_x, $bottom_y):
function to crop the image into the specified length and breadth.
public function crop($top_x, $top_y, $bottom_x, $bottom_y) {
$image_old = $this->image;
$this->image = imagecreatetruecolor($bottom_x - $top_x, $bottom_y - $top_y);
imagecopy($this->image, $image_old, 0, 0, $top_x, $top_y, $this->info['width'], $this->info['height']);
imagedestroy($image_old);
$this->info['width'] = $bottom_x - $top_x;
$this->info['height'] = $bottom_y - $top_y;
}
rotate($degree, $color = 'FFFFFF'):
public function rotate($degree, $color = 'FFFFFF') {
$rgb = $this->html2rgb($color);
$this->image = imagerotate($this->image, $degree, imagecolorallocate($this->image, $rgb[0], $rgb[1], $rgb[2]));
$this->info['width'] = imagesx($this->image);
$this->info['height'] = imagesy($this->image);
}
filter($filter):
private function filter($filter) {
imagefilter($this->image, $filter);
}
text($text, $x = 0, $y = 0, $size = 5, $color = '000000'):
private function text($text, $x = 0, $y = 0, $size = 5, $color = '000000') {
$rgb = $this->html2rgb($color);
imagestring($this->image, $size, $x, $y, $text, imagecolorallocate($this->image, $rgb[0], $rgb[1], $rgb[2]));
}
merge($file, $x = 0, $y = 0, $opacity = 100):
private function merge($file, $x = 0, $y = 0, $opacity = 100) {
$merge = $this->create($file);
$merge_width = imagesx($image);
$merge_height = imagesy($image);
imagecopymerge($this->image, $merge, $x, $y, 0, 0, $merge_width, $merge_height, $opacity);
}
html2rgb($color):
private function html2rgb($color) {
if ($color[0] == '#') {
$color = substr($color, 1);
}
if (strlen($color) == 6) {
list($r, $g, $b) = array($color[0] . $color[1], $color[2] . $color[3], $color[4] . $color[5]);
} elseif (strlen($color) == 3) {
list($r, $g, $b) = array($color[0] . $color[0], $color[1] . $color[1], $color[2] . $color[2]);
} else {
return FALSE;
}
$r = hexdec($r);
$g = hexdec($g);
$b = hexdec($b);
return array($r, $g, $b);
}
Json:
encode($data):
static public function encode($data) {
if (function_exists('json_encode')) {
return json_encode($data);
} else {
switch (gettype($data)) {
case 'boolean':
return $data ? 'true' : 'false';
case 'integer':
case 'double':
return $data;
case 'resource':
case 'string':
return '"' . str_replace(array("\r", "\n", "<", ">", "&"), array('\r', '\n', '\x3c', '\x3e', '\x26'), addslashes($data)) . '"';
case 'array':
if (empty($data) || array_keys($data) === range(0, sizeof($data) - 1)) {
$output = array();
foreach ($data as $value) {
$output[] = Json::encode($value);
}
return '[ ' . implode(', ', $output) . ' ]';
}
case 'object':
$output = array();
foreach ($data as $key => $value) {
$output[] = Json::encode(strval($key)) . ': ' . Json::encode($value);
}
return '{ ' . implode(', ', $output) . ' }';
default:
return 'null';
}
}
}
decode($json, $assoc = FALSE):
static public function decode($json, $assoc = FALSE) {
if (function_exists('json_decode')) {
return json_decode($json);
} else {
$match = '/".*?(?<!\\\\)"/';
$string = preg_replace($match, '', $json);
$string = preg_replace('/[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]/', '', $string);
if ($string != '') {
return NULL;
}
$s2m = array();
$m2s = array();
preg_match_all($match, $json, $m);
foreach ($m[0] as $s) {
$hash = '"' . md5($s) . '"';
$s2m[$s] = $hash;
$m2s[$hash] = str_replace('$', '\$', $s);
}
$json = strtr($json, $s2m);
$a = ($assoc) ? '' : '(object) ';
$data = array(
':' => '=>',
'[' => 'array(',
'{' => "{$a}array(",
']' => ')',
'}' => ')'
);
$json = strtr($json, $data);
$json = preg_replace('~([\s\(,>])(-?)0~', '$1$2', $json);
$json = strtr($json, $m2s);
$function = @create_function('', "return {$json};");
$return = ($function) ? $function() : NULL;
unset($s2m);
unset($m2s);
unset($function);
return $return;
}
}
Collections of opencart function
