php+ajax+mysql聊天室源码

<?php function goURL($url='', $msg='') { $url = ($url)?$url:$_SERVER['HTTP_REFERER']; $url = ($url)?$url:'/'; $JSstr = ''; if($msg) { $JSstr .= '<meta http-equiv="Content-Type" content="text/html; charset=utf-8">'; $JSstr .= "<script>alert('$msg');</script>\n"; } $JSstr .= "<script>location.href='$url'</script>\n"; $JSstr .= "<meta http-equiv=\"refresh\" content=\"1; url=$url\">"; echo $JSstr; exit(); } function html_options($arr, $set='AaBa005353dffs') { foreach($arr as $k=>$v) { if(is_array($v)) { $options[] = "<optgroup title='$k'>"; foreach($v as $k2=>$v2) { $selected = ($set == $k)?'selected':''; if(is_array($set))$selected = (in_array($k, $set))?'selected':''; $options[] = "<option value='$k2' $selected>$v2</option>"; } $options[] = "</optgroup>"; } else { $selected = ($set == $k)?'selected':''; if(is_array($set))$selected = (in_array($k, $set))?'selected':''; $options[] = "<option value='$k' $selected>$v</option>"; } } return implode("\n", $options); } function html_select($idname='select', $options='', $set='AaBa00fte6t5', $js='', $size=0) { $size = ($size==0)?'':"size='$size'"; $select = "<select name='$idname' id='$idname' $size $js style='font-size:12px;'>\n"; if(is_array($options))$select .= html_options($options, $set); $select .= "</select>\n"; return $select; } function html_radios($name, $array, $selected="", $sepreator="&nbsp;&nbsp;") { $html = ""; foreach($array as $k => $v) { $checked = ""; if($k == $selected)$checked = "checked"; $html .= "<label><input name=\"$name\" type=\"radio\" value=\"$k\" $checked> $v</label> $sepreator \n"; } return $html; } function html_checkboxes($name, $array, $selected=array(), $sepreator="&nbsp;&nbsp;") { $html = ""; foreach($array as $k => $v) { $checked = ""; for($i=0;$i<count($selected);$i++) { if($selected[$i] == $k)$checked = "checked"; } $html .= "<label><input name=\"$name\" type=\"checkbox\" value=\"$k\" $checked> $v</label> $sepreator \n"; } return $html; } function NoCacheHeaders() { header( "Cache-Control: no-cache, must-revalidate" ); header( "Pragma: no-cache" ); header( "Expires: Mon, 26 Jul 1997 05:00:00 GMT" ); header( "Last-Modified: " . gmdate( "D, d M Y H:i:s" ) . "GMT" ); } function moduleCheck() { global $conf; $uri = explode('/', $_SERVER['QUERY_STRING']); $module = ($_GET['module'])?$_GET['module']:$uri[0]; if(!is_file(ROOT_PATH."/modules/$module.php") && !is_file(ROOT_PATH."/modules/$module/$module.php"))$module = $conf['default_module']; if(is_file(ROOT_PATH."/modules/$module/$module.php"))$module="$module/$module"; return $module; } function submoduleCheck() { $uri = explode('/', $_SERVER['QUERY_STRING']); $module = ($_GET['module'])?$_GET['module']:$uri[0]; $sub = ($_GET['sub'])?$_GET['sub']:$uri[1]; if(is_file(ROOT_PATH."/modules/$module/$sub.php"))return $sub; } function URLRewrite() { global $conf; $get = $_GET; $module = $get['module']; $sub = $get['sub']; unset($get['module']); unset($get['sub']); $uri = $conf['site_url']."/?$module/$sub".implode('/', $get); return $uri; } function module($module) { global $conf; $module = strtolower($module); $module_file = ROOT_PATH."/modules/$module.php"; if(file_exists($module_file))return $module_file; else return ROOT_PATH."/modules/$conf[default_module].php"; } function scookie($name, $value='', $time=null) { global $conf; return setcookie($name, $value, $time, $conf['cookie_path'], $conf['cookie_host']); } function extfunc($func) { global $conf; $path = ROOT_PATH.'/'.$conf['extend_path']."/functions.$func.php"; if(is_file($path))return $path; else echo "Function $func not found!"; } function extclass($func) { global $conf; $path = ROOT_PATH.'/'.$conf['extend_path']."/class.$func.php"; if(is_file($path))return $path; else echo "Class $func not found!"; } function showphoto($photo,$wh,$nopic='',$class='') { $class=empty($class)?'':'class="'.$class.'"'; $nopic=empty($nopic)?'':'<img src="'.$nopic.'" '.$class.' width="'.$wh.'" BORDER="0">'; if(!file_exists($photo)){ return $nopic; } $i=$photo; $s=getimagesize($i); if($s[0]<=$wh && $s[1]<=$wh){ $bs=""; }else{ if($s[0]>=$s[1]){ $bs=" width='".$wh."' "; }else{ $bs=" height='".$wh."' "; } } return '<IMG SRC="'.$i.'" '.$bs.' BORDER="0" '.$class.'>'; } function wordShift($content) {//过滤敏感词 $s= "*"; $word=array('六四事件','迷昏药','窃听器','买卖枪支','退党','六合彩','k粉'); foreach($word as $keys) { $content=eregi_replace($keys,$s,$content); } return $content; } ?>