I would like to only work with UTF8. The problem is I don't know the charset of every webpage. How can I detect it and convert to UTF8?
<?php
$url = "http://vkontakte.ru";
$ch = curl_init($url);
$options = array(
CURLOPT_RETURNTRANSFER => true,
);
curl_setopt_array($ch, $options);
$data = curl_exec($ch);
// $data = magic($data);
print $data;
See this at: http://paulisageek.com/tmp/curl-utf8
What is magic()?
Going by Gumbo and Pekka's advice, I wrote curl_exec_utf8
/** The same as curl_exec except tries its best to convert the output to utf8 **/
function curl_exec_utf8($ch) {
$data = curl_exec($ch);
if (!is_string($data)) return $data;
unset($charset);
$content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
/* 1: HTTP Content-Type: header */
preg_match( '@([\w/+]+)(;\s*charset=(\S+))?@i', $content_type, $matches );
if ( isset( $matches[3] ) )
$charset = $matches[3];
/* 2: <meta> element in the page */
if (!isset($charset)) {
preg_match( '@<meta\s+http-equiv="Content-Type"\s+content="([\w/]+)(;\s*charset=([^\s"]+))?@i', $data, $matches );
if ( isset( $matches[3] ) ) {
$charset = $matches[3];
/* In case we want do do further processing downstream: */
$data = preg_replace('@(<meta\s+http-equiv="Content-Type"\s+content="[\w/]+\s*;\s*charset=)([^\s"]+)@i', '$1utf-8', $data, 1);
}
}
/* 3: <xml> element in the page */
if (!isset($charset)) {
preg_match( '@<\?xml.+encoding="([^\s"]+)@si', $data, $matches );
if ( isset( $matches[1] ) ) {
$charset = $matches[1];
/* In case we want do do further processing downstream: */
$data = preg_replace('@(<\?xml.+encoding=")([^\s"]+)@si', '$1utf-8', $data, 1);
}
}
/* 4: PHP's heuristic detection */
if (!isset($charset)) {
$encoding = mb_detect_encoding($data);
if ($encoding)
$charset = $encoding;
}
/* 5: Default for HTML */
if (!isset($charset)) {
if (strstr($content_type, "text/html") === 0)
$charset = "ISO 8859-1";
}
/* Convert it if it is anything but UTF-8 */
/* You can change "UTF-8" to "UTF-8//IGNORE" to
ignore conversion errors and still output something reasonable */
if (isset($charset) && strtYou can try and use something like:
http://www.php.net/manual/en/function.mb-detect-encoding.php
http://www.php.net/manual/en/function.mb-convert-encoding.php
Although this is not fool proof.