共有的成员还有办法解决,例如:
class A {
static public $child;
}
A::$child = new B();
对于私有的成员似乎就没有什么干净的方法了,只能这样做:
class A {
static private $child;
static public initialize() {
self::$child = new B();
}
}
A::initialize();
foreach(array('_GET','_POST') as $_request) {
foreach($$_request as $_key => $_value) {
if ($_key{0} != '_') {
if (IS_GPC) {
$_value = s_array($_value);
}
$$_key = $_value;
}
}
}
function s_array(&$array) {
if (is_array($array)) {
foreach ($array as $k => $v) {
$array[$k] = s_array($v);
}
} else if (is_string($array)) {
$array = stripslashes($array);
}
return $array;
}
// 清除HTML代码
function html_clean($content) {
$content = htmlspecialchars($content);
$content = str_replace("n", "<br />", $content);
$content = str_replace(" ", " ", $content);
$content = str_replace("t", " ", $content);
return $content;
}
php 获取系统当前路径与检查php配置参数
function getPath($mainpath, $relativepath) {
global $dir;
$mainpath_info = explode('/', $mainpath);
$relativepath_info = explode('/', $relativepath);
$relativepath_info_count = count($relativepath_info);
for ($i=0; $i<$relativepath_info_count; $i++) {
if ($relativepath_info[$i] == '.' || $relativepath_info[$i] == '') continue;
if ($relativepath_info[$i] == '..') {
$mainpath_info_count = count($mainpath_info);
unset($mainpath_info[$mainpath_info_count-1]);
continue;
}
$mainpath_info[count($mainpath_info)] = $relativepath_info[$i];
} //end for
return implode('/', $mainpath_info);
}
// 检查PHP配置参数
function getphpcfg($varname) {
switch($result = get_cfg_var($varname)) {
case 0:
return "No";
break;
case 1:
return "Yes";
break;
default:
return $result;
break;
}
}
php 数据库在线备份代码
function sqldumptable($table, $fp=0) {
$tabledump = "DROP TABLE IF EXISTS $table;n";
$tabledump .= "CREATE TABLE $table (n";
$firstfield=1;
$fields = mysql_query("SHOW FIELDS FROM $table");
while ($field = mysql_fetch_array($fields)) {
if (!$firstfield) {
$tabledump .= ",n";
} else {
$firstfield=0;
}
$tabledump .= " $field[Field] $field[Type]";
if (!empty($field["Default"])) {
$tabledump .= " DEFAULT '$field[Default]'";
}
if ($field['Null'] != "YES") {
$tabledump .= " NOT NULL";
}
if ($field['Extra'] != "") {
$tabledump .= " $field[Extra]";
}
}
mysql_free_result($fields);
$keys = mysql_query("SHOW KEYS FROM $table");
while ($key = mysql_fetch_array($keys)) {
$kname=$key['Key_name'];
if ($kname != "PRIMARY" and $key['Non_unique'] == 0) {
$kname="UNIQUE|$kname";
}
if(!is_array($index[$kname])) {
$index[$kname] = array();
}
$index[$kname][] = $key['Column_name'];
}
mysql_free_result($keys);
while(list($kname, $columns) = @each($index)) {
$tabledump .= ",n";
$colnames=implode($columns,",");
if ($kname == "PRIMARY") {
$tabledump .= " PRIMARY KEY ($colnames)";
} else {
if (substr($kname,0,6) == "UNIQUE") {
$kname=substr($kname,7);
}
$tabledump .= " KEY $kname ($colnames)";
}
}
$tabledump .= "n);nn";
if ($fp) {
fwrite($fp,$tabledump);
} else {
echo $tabledump;
}
$rows = mysql_query("SELECT * FROM $table");
$numfields = mysql_num_fields($rows);
while ($row = mysql_fetch_array($rows)) {
$tabledump = "INSERT INTO $table VALUES(";
$fieldcounter=-1;
$firstfield=1;
while (++$fieldcounter<$numfields) {
if (!$firstfield) {
$tabledump.=", ";
} else {
$firstfield=0;
}
if (!isset($row[$fieldcounter])) {
$tabledump .= "NULL";
} else {
$tabledump .= "'".mysql_escape_string($row[$fieldcounter])."'";
}
}
$tabledump .= ");n";
if ($fp) {
fwrite($fp,$tabledump);
} else {
echo $tabledump;
}
}
mysql_free_result($rows);
}
@mysql_connect($servername,$dbusername,$dbpassword) or die("数据库连接失败");
@mysql_select_db($dbname) or die("选择数据库失败");
$table = array_flip($_POST['table']);
$result = mysql_query("SHOW tables");
echo ($result) ? NULL : "出错: ".mysql_error();
$filename = basename($_SERVER['HTTP_HOST']."_MySQL.sql");
header('Content-type: application/unknown');
header('Content-Disposition: attachment; filename='.$filename);
$mysqldata = '';
while ($currow = mysql_fetch_array($result)) {
if (isset($table[$currow[0]])) {
$mysqldata.= sqldumptable($currow[0]);
$mysqldata.= $mysqldata."rn";
}
}
mysql_close();
exit;
function copy($from, $to) {
if ($this->abspath($to)=="/") $to=$this->basedir;
if ($this->dirname($from) == $this->dirname($to)) $to = $this->dirname($to).'/复件'.basename($from);
if (!is_dir($from)) {
return @copy($from, $to);
} else {
if (!is_dir($to)) @mkdir($to);
$path = opendir($from);
while( $file = readdir( $path ) ) {
if (($file=='.')||($file=='..')) continue;
if (is_dir($from.'/'.$file)) $this->copy($from.'/'.$file, $to.'/'.$file);
else echo basename($file), copy($from.'/'.$file, $to.'/'.$file) ? ' Success!' : ' False.', '<br />';
}
return true;
}
}