PHP常用函数记录【不定期整理】

function copydir($strSrcDir, $strDstDir)
{
$dir = opendir($strSrcDir);
if (!$dir) {
return false;
}
if (!is_dir($strDstDir)) {
if (!mkdir($strDstDir)) {
return false;
}
}
while (false !== ($file = readdir($dir))) {
if (($file!='.') && ($file!='..')) {
if (is_dir($strSrcDir.'/'.$file) ) {
if (!copydir($strSrcDir.'/'.$file, $strDstDir.'/'.$file)) {
return false;
}
} else {
if (!copy($strSrcDir.'/'.$file, $strDstDir.'/'.$file)) {
return false;
}
}
}
}
closedir($dir);
return true;
}

/**
* 将非GBK字符集的编码转为GBK
*
* @param mixed $mixed 源数据
*
* @return mixed GBK格式数据
*/
function charsetToGBK($mixed)
{
if (is_array($mixed)) {
foreach ($mixed as $k => $v) {
if (is_array($v)) {
$mixed[$k] = charsetToGBK($v);
} else {
$encode = mb_detect_encoding($v, array('ASCII', 'UTF-8', 'GB2312', 'GBK', 'BIG5'));
if ($encode == 'UTF-8') {
$mixed[$k] = iconv('UTF-8', 'GBK', $v);
}
}
}
} else {
$encode = mb_detect_encoding($mixed, array('ASCII', 'UTF-8', 'GB2312', 'GBK', 'BIG5'));
if ($encode == 'UTF-8') {
$mixed = iconv('UTF-8', 'GBK', $mixed);
}
}
return $mixed;
}

/**
* 将非UTF-8字符集的编码转为UTF-8
*
* @param mixed $mixed 源数据
*
* @return mixed utf-8格式数据
*/
function charsetToUTF8($mixed)
{
if (is_array($mixed)) {
foreach ($mixed as $k => $v) {
if (is_array($v)) {
$mixed[$k] = charsetToUTF8($v);
} else {
$encode = mb_detect_encoding($v, array('ASCII', 'UTF-8', 'GB2312', 'GBK', 'BIG5'));
if ($encode == 'EUC-CN') {
$mixed[$k] = iconv('GBK', 'UTF-8', $v);
}
}
}
} else {
$encode = mb_detect_encoding($mixed, array('ASCII', 'UTF-8', 'GB2312', 'GBK', 'BIG5'));
if ($encode == 'EUC-CN') {
$mixed = iconv('GBK', 'UTF-8', $mixed);
}
}
return $mixed;
}