php生成二维码实现代码

<?php
   include('./phpqrcode/phpqrcode.php');
   // 二维码数据
   $data = 'http://gz.altmi.com';
   // 生成的文件名
   $filename = $errorCorrectionLevel.'|'.$matrixPointSize.'.png';
   // 纠错级别：L、M、Q、H
   $errorCorrectionLevel = 'L'; 
   // 点的大小：1到10
   $matrixPointSize = 4; 
   QRcode::png($data, $filename, $errorCorrectionLevel, $matrixPointSize, 2);

?>
 
# 创建一个二维码文件
QRcode::png('code data text', 'filename.png');
// creates file
 
# 生成图片到浏览器
QRcode::png('some othertext 1234');
// creates code image and outputs it directly into browser

$urlToEncode="http://gz.altmi.com";
generateQRfromGoogle($urlToEncode);
function generateQRfromGoogle($chl,$widhtHeight ='150',$EC_level='L',$margin='0')
{
    $url = urlencode($url); 
    echo '<img src="http://chart.apis.google.com/chart?chs='.$widhtHeight.'x'.$widhtHeight.'&cht=qr&chld='.$EC_level.'|'.$margin.'&chl='.$chl.'" alt="QR code" widhtHeight="'.$size.'" widhtHeight="'.$size.'"/>';
}

$cache = new Cache();2、设置缓存时间和缓存目录

$cache = new Cache(60, '/any_other_path/');

$value = $cache->get('data_key');4、写入缓存

$value = $cache->put('data_key', 'data_value');完整实例：

$cache = new Cache();

//从缓存从读取键值 $key 的数据
$values = $cache->get($key);

//如果没有缓存数据
if ($values == false) {
 //insert code here...
 //写入键值 $key 的数据
 $cache->put($key, $values);
} else {
 //insert code here...
}
Cache.class.php

<?php
class Cache {
 private $cache_path;//path for the cache
 private $cache_expire;//seconds that the cache expires

 //cache constructor, optional expiring time and cache path
 public function Cache($exp_time=3600,$path="cache/"){
  $this->cache_expire=$exp_time;
  $this->cache_path=$path;
 }

 //returns the filename for the cache
 private function fileName($key){
  return $this->cache_path.md5($key);
 }

 //creates new cache files with the given data, $key== name of the cache, data the info/values to store
 public function put($key, $data){
  $values = serialize($data);
  $filename = $this->fileName($key);
  $file = fopen($filename, 'w');
     if ($file){//able to create the file
         fwrite($file, $values);
         fclose($file);
     }
     else return false;
 }

 //returns cache for the given key
 public function get($key){
  $filename = $this->fileName($key);
  if (!file_exists($filename) || !is_readable($filename)){//can't read the cache
   return false;
  }
  if ( time() < (filemtime($filename) + $this->cache_expire) ) {//cache for the key not expired
   $file = fopen($filename, "r");// read data file
         if ($file){//able to open the file
             $data = fread($file, filesize($filename));
             fclose($file);
             return unserialize($data);//return the values
         }
         else return false;
  }
  else return false;//was expired you need to create new
  }
}
?>

$open = fopen("template.htm","r"); //打开模板文件
$content = fread($open,filesize("template.htm")); //读取模板文件内容
//print_r($content);
$content = str_replace("{title}","测试标题",$content);//替换
$content = str_replace("{contents}","测试内容",$content);

$newtemp = fopen("1.htm","w");//生成,用写入方式打开一个不存在（新）的页面
fwrite($newtemp,$content);//将刚刚替换的内容写入新文件中
fclose($newtemp);
echo "生成";

//假设从数据库中调的数据存放在二维数组$arr中
$arr = array(array("新闻标题一","新闻内容一"),array("新闻标题二","新闻内容二")); 

foreach($arr as $key=>$value){
 $title = $value[0];
 $contents = $value[1];
 //echo $title.''.$contents.'';
 $path = $key.'.html';
 $open = fopen("template.htm","r"); //打开模板文件
 $handle = fread($open,filesize("template.htm")); //读取模板文件内容

 $content = str_replace("{title}",$title,$handle);//替换
 $content = str_replace("{contents}",$contents,$handle);

 $newtemp = fopen($path,"w");//用写入方式打开一个不存在（新）的页面
 fwrite($newtemp,$content);//将刚刚替换的内容写入新文件中
 fclose($newtemp);
 echo "生成";
}

#!/bin/sh
 
#check MySQL_Slave Status
#crontab time 00:10
MYSQL_USER="root"
MYSQL_PWD="123456"
MYSQL_SLAVE_LOG="/tmp/check_mysql_slave.log"
EMAIL="1351010****@139.com"
 
MYSQL_PORT=`netstat -na|grep "LISTEN"|grep "3306"|awk -F[:" "]+ '{print $5}'`
MYSQL_IP=`ifconfig eth0|grep "inet addr" | awk -F[:" "]+ '{print $4}'`
MYSQL_SLAVE_STATUS=$(/usr/local/webserver/mysql/bin/mysql -u root -psylc23hua -S /tmp/mysql.sock -e

"show slave statusG" | grep -i "running")
IO_ENV=`echo $MYSQL_SLAVE_STATUS | grep IO | awk ' {print $2}'`
SQL_ENV=`echo $MYSQL_SLAVE_STATUS | grep SQL | awk '{print $2}'`
NOW=$(date -d today +'%Y-%m-%d %H:%M:%S')
 
if [ "$MYSQL_PORT" = "3306" ];then
  echo "mysql is running!"
else
  mail -s "warn!server: $MYSQL_IP mysql is down" "$EMAIL"
fi
 
if [ "$IO_ENV" = "Yes" -a "$SQL_ENV" = "Yes" ];then
  echo "Slave is running!"
else
  echo "[ $NOW ] Slave is not running!" >> "$MYSQL_SLAVE_LOG"
  cat "$MYSQL_SLAVE_LOG" | mail -s "WARN! ${MySQL_IP}_replicate_error" "$EMAIL"
fi
 
exit 0

check_rep.php

<!--?php<br /-->if(empty($_REQUEST["key"])) die(':) missing key');
if($_REQUEST["key"] != 'xupeng') die(':) error key');

include("mysql_instance.php");
include("check_status_api.php");

define("USERNAME", "用户名");
define("PASSWORD", "密码");
define("DEBUGMODE", false);

$instances = get_instances();

if($instances){
 echo <<

<!-- 30分钟自动刷新 -->

END;
 echo "
n";
 if(!DEBUGMODE){
  echo "

n";
 }else{
  echo "

n";
 }
 foreach($instances as $host){
  $res = check_mysql_replication_status($host, USERNAME, PASSWORD);
  if(!DEBUGMODE){
   switch($res["result"]){
    case -4:
     $memo = "未知异常";
     break;
    case -3:
     $memo = "查询失败";
     break;
    case -2:
     $memo = "无法连接端口";
     break;
    case -1:
     $memo = "状态未知";
     break;
    case 0:
     $memo = "OK";
     break;
    case 1:
     $memo = "同步失败";
     if($res["Slave_IO_Running"] <> "Yes"){
      $memo .= $res["Last_IO_Error"] . "(" .  $res

["Last_IO_Errno"] . ")";
     }
     if($res["Slave_SQL_Running"] <> "Yes"){
      $memo .= $res["Last_SQL_Error"] . "(" .  $res

["Last_SQL_Errno"] . ")";
     }
     break;
    case 2:
     $memo = "数据库未设置同步";
     break;
   }
   echo "

n";
  }else{
   echo "

n";
  }
 }
 echo "
<table border="">
<tbody>
<tr>
<td>instance</td>
<td>result</td>
<td>Slave_IO_Running</td>
<td>Slave_SQL_Running</td>
<td>Master_Host</td>
<td>Master_Port</td>
<td>Replicate_Do_DB</td>
<td>memo</td>
</tr>
<tr>
<td>instance</td>
<td>result</td>
<td>Slave_IO_Running</td>
<td>Slave_SQL_Running</td>
<td>Master_Host</td>
<td>Master_Port</td>
<td>Replicate_Do_DB</td>
<td>Slave_IO_State</td>
<td>Last_IO_Errno</td>
<td>Last_IO_Error</td>
<td>Last_SQL_Errno</td>
<td>Last_SQL_Error</td>
</tr>
<tr>
<td>{$host}</td>
<td>{$res['result']}</td>
<td>{$res['Slave_IO_Running']}</td>
<td>{$res['Slave_SQL_Running']}</td>
<td>{$res['Master_Host']}</td>
<td>{$res['Master_Port']}</td>
<td>{$res['Replicate_Do_DB']}</td>
<td>{$memo}</td>
</tr>
<tr>
<td>{$host}</td>
<td>{$res['result']}</td>
<td>{$res['Slave_IO_Running']}</td>
<td>{$res['Slave_SQL_Running']}</td>
<td>{$res['Master_Host']}</td>
<td>{$res['Master_Port']}</td>
<td>{$res['Replicate_Do_DB']}</td>
<td>{$res['Slave_IO_State']}</td>
<td>{$res['Last_IO_Errno']}</td>
<td>{$res['Last_IO_Error']}</td>
<td>{$res['Last_SQL_Errno']}</td>
<td>{$res['Last_SQL_Error']}</td>
</tr>
</tbody>
</table>
n";
 echo <<

END;
}else{
 die("no mysql instances defined.");
}
check_status_api.php

<!--?php<br /-->/*
 * 检查mysql服务器的同步状态
 */
function check_mysql_replication_status($host, $username, $password)
{
 //默认状态未知
 $r = array(
  "result" => -1
  );
 try{
  $dbh = @mysql_connect($host, $username, $password);
  if(!$dbh){
   //无法连接
   $r["result"] = -2;
   return($r);
  }
  $query = "SHOW SLAVE STATUS";
  $res = @mysql_query($query, $dbh);
  $err = @mysql_error();
  if($err){
   //无法连接
   $r["result"] = -3;
   return($r);
  }
  $row = mysql_fetch_array($res);
  $r = $row;
  if(($r["Slave_IO_Running"] == "Yes") && ($r["Slave_SQL_Running"] == "Yes"))
  {
   $r["result"] = 0;
  }else{
   if(!empty($row)){
    $r["result"] = 1;
   }else{
    $r["result"] = 2;
   }
  }
 }catch(Exception $e){
  $r["result"] = -4;
 }
 return($r);
}
mysql_instance.php

<!--?php 
//GRANT REPLICATION CLIENT ON *.* TO '用户名'@'监控主机ip' IDENTIFIED BY '密码';  $mysql_instances =

array();
$mysql_instances[] = "远程ip:端口";  $mysql_instances[] = "远程ip:端口";
function get_instances()
{   
global $mysql_instances;   
return $mysql_instances; 
} 
?-->