function.html_image.php in Quiz 6.6
File
includes/moodle/lib/smarty/plugins/function.html_image.php
View source
<?php
function smarty_function_html_image($params, &$smarty) {
require_once $smarty
->_get_plugin_filepath('shared', 'escape_special_chars');
$alt = '';
$file = '';
$height = '';
$width = '';
$extra = '';
$prefix = '';
$suffix = '';
$server_vars = $smarty->request_use_auto_globals ? $_SERVER : $GLOBALS['HTTP_SERVER_VARS'];
$basedir = isset($server_vars['DOCUMENT_ROOT']) ? $server_vars['DOCUMENT_ROOT'] : '';
foreach ($params as $_key => $_val) {
switch ($_key) {
case 'file':
case 'height':
case 'width':
case 'dpi':
case 'basedir':
${$_key} = $_val;
break;
case 'alt':
if (!is_array($_val)) {
${$_key} = smarty_function_escape_special_chars($_val);
}
else {
$smarty
->trigger_error("html_image: extra attribute '{$_key}' cannot be an array", E_USER_NOTICE);
}
break;
case 'link':
case 'href':
$prefix = '<a href="' . $_val . '">';
$suffix = '</a>';
break;
default:
if (!is_array($_val)) {
$extra .= ' ' . $_key . '="' . smarty_function_escape_special_chars($_val) . '"';
}
else {
$smarty
->trigger_error("html_image: extra attribute '{$_key}' cannot be an array", E_USER_NOTICE);
}
break;
}
}
if (empty($file)) {
$smarty
->trigger_error("html_image: missing 'file' parameter", E_USER_NOTICE);
return;
}
if (substr($file, 0, 1) == '/') {
$_image_path = $basedir . $file;
}
else {
$_image_path = $file;
}
if (!isset($params['width']) || !isset($params['height'])) {
if ($smarty->security && ($_params = array(
'resource_type' => 'file',
'resource_name' => $_image_path,
)) && (require_once SMARTY_CORE_DIR . 'core.is_secure.php') && !smarty_core_is_secure($_params, $smarty)) {
$smarty
->trigger_error("html_image: (secure) '{$_image_path}' not in secure directory", E_USER_NOTICE);
}
elseif (!($_image_data = @getimagesize($_image_path))) {
if (!file_exists($_image_path)) {
$smarty
->trigger_error("html_image: unable to find '{$_image_path}'", E_USER_NOTICE);
return;
}
else {
if (!is_readable($_image_path)) {
$smarty
->trigger_error("html_image: unable to read '{$_image_path}'", E_USER_NOTICE);
return;
}
else {
$smarty
->trigger_error("html_image: '{$_image_path}' is not a valid image file", E_USER_NOTICE);
return;
}
}
}
if (!isset($params['width'])) {
$width = $_image_data[0];
}
if (!isset($params['height'])) {
$height = $_image_data[1];
}
}
if (isset($params['dpi'])) {
if (strstr($server_vars['HTTP_USER_AGENT'], 'Mac')) {
$dpi_default = 72;
}
else {
$dpi_default = 96;
}
$_resize = $dpi_default / $params['dpi'];
$width = round($width * $_resize);
$height = round($height * $_resize);
}
return $prefix . '<img src="' . $file . '" alt="' . $alt . '" width="' . $width . '" height="' . $height . '"' . $extra . ' />' . $suffix;
}