The Meaning of College Essay Writing Service

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MAC OS X环境下配置APACHE+PHP+MYSQL+PHPMYADMIN

本文为记录MAC OS X环境下配置APACHE+PHP+MYSQL+PHPMYADMIN的教程。飘易手里的mac系统是os x 10.9.5 ,由于需要在mac系统下配置php开发环境,特此记录下配置要点,留作备用,如果对您的配置也有帮助,那敢情是好的。    MAC OS X 10.9.5系统里已经自带了 apache  和 php ,只是默认没有启用,我们将他们启用即可。
APACHE的默认版本是 Apache/2.2.26 (Unix),php版本是PHP 5.4.30。    一、启用apache
在终端(Terminal)中输入 sudo apachectl start 即可启动apache。    apache常用命令:

启动 Apache: sudo apachectl start
关闭 Apache: sudo apachectl stop
重启 Apache:sudo apachectl restart
查看 Apache 版本:httpd -v  或者 apachectl -v

启动apache后,在浏览器中访问 http://localhost 或 http://127.0.0.1,如果出现“It works!”就表示运行正常。    OS X 中默认有两个目录可以直接运行你的 Web 程序,一个是系统级的 Web 根目录,一个是用户级的根目录。
注:以下 piaoyi 为用户名,需要按实际修改。
Apache系统级的根目录及对应网址是:
/Library/WebServer/Documents/   —-  http://localhost
用户级的根目录及对应网址是:
~/Sites  —–  http://localhost/~piaoyi/
~/Sites 也就是你用户目录下面的”站点”目录,在 OS X 中,这个目录可能没有,所以你需要手动建立一个同名目录。
建立方式很简单,直接在终端中运行:
sudo mkdir ~/Sites
比如我就把网站根目录放在我的用户根目录下的 php文件夹里:

MAC OS X环境下配置APACHE+PHP+MYSQL+PHPMYADMIN

使用系统自带的目录 /Library/WebServer/Documents/ 很不方便,因此可以修改为我们的用户目录,比如我的 php 文件夹,修改apache的配置文件  httpd.conf  (如果放在其他目录就需要配置复杂的权限,建议大家放在用户级的根目录里):
把 DocumentRoot “/Library/WebServer/Documents”
修改成:DocumentRoot “/Users/CCMAC/php”把 <Directory “/Library/WebServer/Documents”>
改成:<Directory “/Users/CCMAC/php”>然后再解决“You don’t have permission to access on this server“错误,查找:

<Directory />
Options FollowSymLinks
AllowOverride None
Order deny,allow
allow from all
</Directory>

改成:

<Directory />
Options FollowSymLinks
AllowOverride None
#Order deny,allow
#allow from all
</Directory>

  启用 虚拟主机配置文件
找到 #Include /private/etc/apache2/extra/httpd-vhosts.conf
删掉前面的注释符号 #
然后打开”/private/etc/apache2/extra/httpd-vhosts.conf“,把里面的2段示例代码 注释掉,添加我们自己的虚拟主机配置即可。    二、启用php    php为系统自带,我们只要手动打开即可:修改apache配置文件,用vim命令或编辑器都可以,打开:
/etc/apache2/httpd.conf
查找里面的的这行:#LoadModule php5_module libexec/apache2/libphp5.so
把前面的注释符号  #  删掉,保存文件并重启apache,此时php就已经启用了。    三、安装mysql
mysql MAX系统没有自带,需要自己安装。
你可以点击 http://dev.mysql.com/downloads/mysql/ 去官网下载 MySQL 的安装包。
国内用户从国外服务器下载mysql可能太慢,可以使用sohu提供的国内镜像点下载:http://mirrors.sohu.com/mysql/ 。
请下载 Mac OS X 10.9 (x86, 64-bit), DMG Archive  (如有更新版本,可下载)。飘易下载的时候,最新版是:(mysql-5.6.22-osx10.9-x86_64.dmg)。下载完DMG之后,双击安装后,mysql会随系统启动而自启动,进入「系统偏好设置」,在面板的最下面你会看到一个 MySQL 的设置项,点击它之后就可以管理MySQL的启动和停止。把mysqlmysqladmin这2个命令建立软链接到系统默认执行目录里/usr/bin 或 /bin 或 /usr/sbin 或 /sbin 里面

sudo ln -s /usr/local/mysql/bin/mysql /usr/bin/mysql
sudo ln -s /usr/local/mysql/bin/mysqladmin /usr/bin/mysqladmin

这样就可以在终端中比较简单地通过命令进行相应的操作,比如安装完毕之后MySQL的root默认密码为空,如果要设置密码可以在终端运行“mysqladmin -u root password “mysqlpassword””来设置,其中mysqlpassword即root的密码。    注意:这个时候在php程序里使用 127.0.0.1 连接mysql是可以正常使用的,但是如果我们使用 localhost 主机名来连接mysql,会出现无法连接mysql服务器的错误信息,需要我们手动修复下。    错误原因:
PHP默认连接mysql的路径是 : /var/mysql/mysql.sock ,但是mac下这个路径是不存在的,mac把mysql.sock 放在了 /tmp/mysql.sock ,解决方法有2个:方法1、修改php.ini文件(/etc/php.ini)
查找 mysql.default_socket、mysqli.default_socket、pdo_mysql.default_socket 把他们的值都改为 /tmp/mysql.sock

mysql.default_socket = /tmp/mysql.sock
mysqli.default_socket = /tmp/mysql.sock
pdo_mysql.default_socket = /tmp/mysql.sock

方法2、使用 ln -s 命令创建软连接(推荐)

sudo mkdir /var/mysql
sudo ln -s /tmp/mysql.sock /var/mysql/mysql.sock

原理是把 /tmp/mysql.sock 映射到 /var/mysql/mysql.sock,这样,php默认读取的mysql.sock文件路径就存在了。    四、安装 phpmyadmin     可以在 phpMyAdmin官网下载安装包:http://www.phpmyadmin.net/home_page/downloads.php,可以下载 all-languages.tar.gz 使用中文版,解压之后,将解压出来的文件夹改名为”phpmyadmin”,并放到上面建立的”站点”目录下。
配置:复制 phpmyadmin/libraries/config.default.php  到并改名 phpmyadmin/config.inc.php,然后修改 config.inc.php文件:
$cfg[‘blowfish_secret’] = ‘piaoyi’;
这个密钥是用作cookie加密用的。到这里就算完成了,接下来你就可以访问 http://localhost/phpmyadmin/ 来通过 phpmysql 管理你的数据库了。     五、如有必要,可以安装 Zend Guard Loader 
mac 10.9.5 自带的 PHP 5.4.30 内部核心 zend 引擎版本是 Zend Engine v2.4.0,但是这个可不是 zend guard loader(php5.2及之前的版本名字是 Zend Optimizer),不要搞混哦。在调试某些程序(比如 ecstore 2.3)的时候,就需要 Zend Optimizer 2.5.7 及以上。     MAC下的安装步骤(参考):
1、下载 Zend Guard Loader 6.0.0 (for PHP 5.3 or 5.4) ,网址: http://www.zend.com/en/products/guard/downloads
文件是:Zend Guard Loader (Runtime for PHP 5.4) 6.0.0,类型:DMG。
Mac下载地址:http://downloads.zend.com/guard/6.0.0/ZendGuardLoader-70429-PHP-5.4-darwin10.7-x86_64.tar.gz
2、从压缩包里提取 ZendGuardLoader.so (Linux) or ZendLoader.dll (Windows) ;
mac下的ZendGuardLoader.so,只有3.3版本的。
3、编辑php配置文件  ‘php.ini’ :

zend_extension = /usr/local/lib/php/ZendGuardLoader.so ##路径根据实际情况而定
zend_loader.enable=1
zend_loader.disable_licensing=0
zend_loader.obfuscation_level_support=3
zend_loader.license_path=

4、如果你同时使用 Zend debugger,请确保在 Zend Guard Loader 加载之后加载.
5、如果你使用 ioncube loader,请确保在 Zend Guard Loader 加载之前加载.
6、重启 Web server.    安装完毕后,用 phpinfo() 函数查看,有这类描述:“ with Zend Guard Loader v3.3”,出现下图即为成功:

MAC OS X环境下配置APACHE+PHP+MYSQL+PHPMYADMIN

注意:MAC os x目前已经没有了32位的版本,新出的都是64位。因此,在MAC下安装了php5.3之后,再到zend官网去找 ZendGuardLoader.so,你会发现zend根本就没有出 64位版本的 ZendGuardLoader.so,只有32位的,这个时候,如果你强行引用32位的 ZendGuardLoader.so for mac php5.3,就会出现下列错误:

Failed loading /usr/local/lib/php/php53/ZendGuardLoader.so:  dlopen(/usr/local/lib/php/php53/ZendGuardLoader.so, 9): no suitable image found.  Did find:
/usr/local/lib/php/php53/ZendGuardLoader.so: mach-o, but wrong architecture

这个错误,官方回复说无解,此路不通。

At present we only support 32 bit on the Mac for backward compatibility. In the next major version we will probably move to 64 bit only. . You’re simplest solution might be to download Zend Server CE for the Mac and get a complete 32 bit stack.

参考链接:
1、ZendGuardLoader on php 5.3.8:http://forums.zend.com/viewtopic.php?f=57&t=43093
2、Zend Guard Loader on MacOX Snow Leopard:http://forums.zend.com/viewtopic.php?f=57&t=79708
3、installing Zend Guard Loader on Mac os with PHP 5.3:http://forums.zend.com/viewtopic.php?f=57&t=21538

php 生成图片,给图片加水印

用php生成一张图片,并给图片添加水印的方法。

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<?php
    $path 'p1.jpg';
    $path1 'p2.png';
    $img = imagecreatefromstring(file_get_contents($path)); //获取图片
    $img1 = imagecreatefromstring(file_get_contents($path1));
    
    //将水印图片复制到目标图片上,最后个参数50是设置透明度,这里实现半透明效果
    imagecopymerge($img$img1, 10, 10, 0, 0, 100, 100, 50);
    //如果水印图片本身带透明色,则使用imagecopy方法
    imagecopy($img$img1, 100, 100, 0, 0,97,206);
    
    $fontcolor1 = imagecolorallocate($img,255,255,255); //定义颜色
    imagettftext($img,20,90,100,600,$fontcolor1,'035-CAI978.ttf','字体大小');  //设置字体
    
    $fontcolor = imagecolorallocate($img,0,0,0);
    imagestring($img, 3, 2, 3, "Hello world!"$fontcolor);  //写入文字
    imagestring($img, 10, 10, 10, "Hello world!222222222"$fontcolor);  //继续写入文字 
    
    header('Content-Type: image/jpeg');
    imagejpeg($img);
    imagedestroy($img);
?>

MySQL:if语句、if…else语句、case语句,使用方法解析!

if语句做为表达式使用,语法格式如下:

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IF(expr1,expr2,expr3)

说明:              

如果 expr1 是TRUE (expr1 <> 0 and expr1 <> NULL),则 IF()的返回值为expr2; 否则返回值则为 expr3。IF() 的返回值为数字值或字符串值,具体情况视其所在语境而定。

例子:             

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select *,if(age=1,"男","女"as ages from user;

当然如果作为表达式的话,if也可以用CASE when来实现的:

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/* 下面这个将输出:男 */
SELECT
    CASE 
        WHEN THEN '男'
        WHEN THEN '女'
        ELSE '未知'
    END
as ages
/* 下面这个将输出:女 */
SELECT
    CASE 
        WHEN THEN '男'
        WHEN THEN '女'
        ELSE '未知'
    END
as ages
/* 下面这个将输出:未知 */
SELECT
    CASE 
        WHEN THEN '男'
        WHEN THEN '女'
        ELSE '未知'
    END
as ages
/*   当然还有一种写法  输出:未知 */
SELECT
    CASE
        WHEN 3=1 THEN '男'
        WHEN 3=2 THEN '女'
        ELSE '未知'
    END
as ages
SELECT
    CASE
        WHEN 3=1 THEN '男'
        WHEN 3=2 THEN '女'
    WHEN (3=4 || 3!=nullTHEN '测试'
        ELSE '未知'
    END
as ages

从上面的例子我们可以看出得很明白了,case后面的值=when后台的值,然后就会输出when后面跟的then后的值。如果都不等行的话,就输出else后的值。

IF…ELSE…做为流程控制语句使用,语法格式如下:

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IF search_condition THEN
    statement_list  
[ELSEIF search_condition THEN]  
    statement_list ...  
[ELSE
    statement_list]  
END IF

说明:              

与PHP中的IF语句类似

当IF中条件search_condition成立时,执行THEN后的statement_list语句、

否则判断ELSEIF中的条件成立时,执行其后的statement_list语句、

否则继续判断其他分支。

当所有分支的条件均不成立时,执行ELSE分支。

search_condition是一个条件表达式,可以由“=、<、<=、>、>=、!=”等条件运算符组成,并且可以使用AND、OR、NOT对多个表达式进行组合。

例子:             

建立一个存储过程,该存储过程通过学生学号(student_no)和课程编号(course_no)查询其成绩(grade),

返回成绩和成绩的等级,成绩大于90分的为A级,小于90分大于等于80分的为B级,小于80分大于等于70分的为C级,依次到E级

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create procedure dbname.proc_getGrade  
(stu_no varchar(20),cour_no varchar(10))  
BEGIN
declare stu_grade float;  
select grade into stu_grade from grade where student_no=stu_no and course_no=cour_no;  
if stu_grade>=90 then
    select stu_grade,'A';  
elseif stu_grade<90 and stu_grade>=80 then
    select stu_grade,'B';  
elseif stu_grade<80 and stu_grade>=70 then
    select stu_grade,'C';  
elseif stu_grade70 and stu_grade>=60 then
    select stu_grade,'D';  
else
    select stu_grade,'E';  
end if;  
END

注意:IF作为一条语句,在END IF后需要加上分号“;”以表示语句结束,其他语句如CASE、LOOP等也是相同的。

PHP 图片处理类(图片加水印,图片加文字,图片缩略处理,获取图片信息等)

PHP 图片处理类(图片加水印,图片加文字,图片缩略处理,获取图片信息等)

 

<?php
header('content-type:text/html;charset=utf-8');
class Imgs
{
    /**
     * 取得图片宽
     * @param string $src 图片相对路径或绝对路径
     */
    public static function get_width($src)
    {
        return imagesx($src);
    }
    /**
     * 取得图片高
     * @param string $src 图片相对路径或绝对路径
     */
    public static function get_height($src)
    {
        return imagesy($src);
    }
    /** 
     * 图片缩放函数   
     * @param string $src 图片相对路径或绝对路径 
     * @param int $w 缩略图宽
     * @param int $h 缩略图高
     * @return array code:状态。msg:提示信息
     **/
    public static function thumb($src,$w=null,$h=null)     
    {   
        if(empty($src)) return array('code'=>false , 'msg'=>'请指定$src');
        $temp pathinfo($src);
        #  文件名
        $name $temp["basename"];
        #  文件所在的文件夹
        $dir $temp["dirname"];
        #  文件扩展名
        $extension $temp["extension"];
        #  缩略图保存路径,新的文件名为*.thumb.jpg
        $savepath "{$dir}/thumb_{$name}";
        
        #  获取图片的基本信息
        $info getimagesize($src);
        #  获取图片宽度
        $width $info[0];
        #  获取图片高度
        $height $info[1];
        if(!empty($w)){
            $temp_w=$w;                         #  计算原图缩放后的宽度
            $temp_h=intval($height*($w/$width));#  计算原图缩放后的高度
        }else{
            $temp_w=intval($width*($h/$height));#  计算原图缩放后的宽度
            $temp_h=$h;                         #  计算原图缩放后的高度
        }
        #  创建画布
        $temp_img=imagecreatetruecolor($temp_w,$temp_h);
        switch ($info[2])     
        {     
            case 1:     
                $im=imagecreatefromgif($src);   
                imagecopyresampled($temp_img,$im,0,0,0,0,$temp_w,$temp_h,$width,$height); 
                imagegif($temp_img,$savepath, 100);   
                break;     
            case 2:     
                $im=imagecreatefromjpeg($src);   
                imagecopyresampled($temp_img,$im,0,0,0,0,$temp_w,$temp_h,$width,$height);     
                imagejpeg($temp_img,$savepath, 100);      
                break;     
            case 3:     
                $im=imagecreatefrompng($src);  
                imagecopyresampled($temp_img,$im,0,0,0,0,$temp_w,$temp_h,$width,$height); 
                imagepng($temp_img,$savepath, 100);    
                break;     
        }        
        imagedestroy($im); 
        return $savepath;
    
    /** 
     * 图片添加水印   
     * @param string $src  1、图片相对路径或绝对路径  2、以逗号隔开的宽高值('800,600')
     * @param array  属性值:
     *                    res:水印资源(1、图片相对路径或绝对路径,2、字符串)
     *                 pos:图片水印添加的位置,取值范围:0~9
     *                         0:随机位置,在1~8之间随机选取一个位置
    *                         1:顶部居左 2:顶部居中 
     *                         3:顶部居右 4:左边居中
     *                         5:图片中心 6:右边居中 
     *                         7:底部居左 8:底部居中 
     *                         9:底部居右
     *                 font:    字体库(相对路径或绝对路径)
     *                 fontSize:文字大小
     *                 color:   水印文字的字体颜色(255,255,255)
     *                 name:    图片保存名称
     * @return array    code:状态、 msg:提示信息、 url:图片地址
     **/
    public static function setWater($src$arr=array())
    {  
        if(empty($src)) return array('code'=>false , 'msg'=>'请指定$src');
        $def array(
            'res'       => '小川编程',
            'pos'       => 7,
            'font'      => './1.ttf',
            'fontSize'  => 24,
            'color'     => '255,255,255',
            'name'      => null
        );
        $def array_merge($def,$arr);
        /**
            判断$src是不是图片,不是就创建画布
        */
        if(!file_exists($src)){
            if(empty($def['name'])) return array('code'=>false , 'msg'=>'请指定图片名称');
            # 计算画布宽高
            $obj explode(','$src);
            if(count($obj)!=2) return array('code'=>false , 
                'msg'=>'请给正确的宽高,或你给的不是一个有效的地址!');
            $srcImg_w is_numeric($obj[0]) ? $obj[0] : 400 ;
            $srcImg_h is_numeric($obj[1]) ? $obj[1] : 300 ;
            # 创建画布
            $dst_img = @imagecreatetruecolor($srcImg_w,$srcImg_h);
        }else{
            #  获取图片信息
            $srcInfo = @getimagesize($src);
            $srcImg_w $srcInfo[0];
            $srcImg_h $srcInfo[1];
            if(empty($def['name'])) $def['name'] = $src;
            #  动态的把图片导入内存中
            switch ($srcInfo[2]){ 
                case 1: 
                    $dst_img = imagecreatefromgif($src); 
                break
                case 2: 
                    $dst_img = imagecreatefromjpeg($src); 
                break
                case 3: 
                    $dst_img = imagecreatefrompng($src); 
                break
                default
                    return array('code'=>false , 'msg'=>'目标图片类型错误');
                exit
            }
        }
        /**
            计算出水印宽高
        */
        if(!file_exists($def['res'])){
            if(!file_exists($def['font']))
                return array('code'=>false , 'msg'=>'字体库不存在');
            $box = @imagettfbbox($def['fontSize'], 0, $def['font'], $def['res']);
            $logow = max($box[2], $box[4]) - min($box[0], $box[6]);
            $logoh = max($box[1], $box[3]) - min($box[5], $box[7]);  
        }else{
            $resInfo = @getimagesize($def['res']);
            $res_w $resInfo[0];
            $res_h $resInfo[1];
            if($srcImg_w $res_w || $srcImg_h $res_h)
                return array('code'=>false , 'msg'=>'水印图片过大');
            #  动态的把图片导入内存中
            switch ($resInfo[2]){ 
                case 1: 
                    $markim = imagecreatefromgif($def['res']); 
                break
                case 2: 
                    $markim = imagecreatefromjpeg($def['res']); 
                break
                case 3: 
                    $markim = imagecreatefrompng($def['res']); 
                break
                default
                    return array('code'=>false , 'msg'=>'水印图片类型错误');
                exit
            }
            $logow $res_w;
            $logoh $res_h;
        }
        /**
            计算水印显示位置
        */
        if($def['pos'] == 0) $def['pos'] = rand(1, 9);
        switch($def['pos'])
        {
            case 1:
                $x = +10;
                $y = +10+$def['fontSize'];
            break;
            case 2:
                $x = ($srcImg_w $logow) / 2;
                $y = +10+$def['fontSize'];
            break;
            case 3:
                $x $srcImg_w $logow - 10;
                $y = +10+$def['fontSize'];
            break;
            case 4:
                $x = +10;
                $y = ($srcImg_h $logoh) / 2 + $def['fontSize'];
            break;
            case 5:
                $x = ($srcImg_w $logow) / 2;
                $y = ($srcImg_h $logoh) / 2 + $def['fontSize'];
            break;
            case 6:
                $x $srcImg_w $logow - 10;
                $y = ($srcImg_h $logoh) / 2 + $def['fontSize'];
            break;
            case 7:
                $x = +10;
                $y $srcImg_h $logoh $def['fontSize'] - 10;
            break;
            case 8:
                $x = ($srcImg_w $logow) / 2;
                $y $srcImg_h $logoh $def['fontSize'] - 10;
            break;
            case 9:
                $x $srcImg_w $logow - 10;
                $y $srcImg_h $logoh $def['fontSize'] - 10;
            break;
            default
                return array('code'=>false , 'msg'=>'水印位置不支持');
            exit;
        }
        /**
            把图片水印或文字水印,加到目标图片中
        */
        if(file_exists($def['res'])){
            imagecopy($dst_img$markim$x$y, 0, 0, $logow$logoh);
            imagedestroy($markim);
        }else{
            $rgb explode(','$def['color']);
            if(count($rgb)!=3) return array('code'=>false , 'msg'=>'请给正确的字体颜色');
            if(!is_numeric($rgb[0]) || !is_numeric($rgb[1]) || !is_numeric($rgb[2])) 
                return array('code'=>false , 'msg'=>'请给正确的字体颜色');
            if($rgb[0]>255 || $rgb[1]>255 || $rgb[2]>255) 
                return array('code'=>false , 'msg'=>'请给正确的字体颜色');
            $def['color'] = imagecolorallocate($dst_img$rgb[0], $rgb[1], $rgb[2]);
            imagettftext($dst_img$def['fontSize'], 0, $x
                $y$def['color'], $def['font'],$def['res']);
        }
        /**
            保存处理过的图片(有水印了的图片)
        */
        $name explode('.'$def['name']);
        switch (strtolower($name[2])) {
            case 'jpeg':
                    imagejpeg($dst_img$def['name']);
                break;
            case 'jpg':
                    imagejpeg($dst_img$def['name']);
                break;
            case 'png':
                    imagepng($dst_img$def['name']);
                break;
            case 'gif':
                    imagegif($dst_img$def['name']);
                break;
            default:
                    return array('code'=>false , 'msg'=>'保存图片类型有误');
                break;
        }
        #  销毁图片内存资源
        imagedestroy($dst_img);
        return array('code'=>true , 'msg'=>'添加水印成功''url'=>$def['name']);
    }
}
/*
    创建一个800*600的图再加logo.jpg图片作为水印.
    1、另存为new_thumb.jpeg
    2、水印在中间显示
*/
#  参数:
$arr = [
    #  水印图片路径(如果不存在将会被当成是字符串水印)
    'res'  => './logo.jpg',
    #  水印显示位置
    'pos'  => 5,
    #  不指定name(会覆盖原图,也就是保存成thumb.jpeg)
    'name' => './800x600.jpeg',  
];
$res = Imgs::setWater('800,600'$arr);
print_r($res);
/*
    给图片thumb.jpeg加:小川编程,作为水印
    1、另存为new_thumb.jpeg
    2、水印顶部居右显示
    3、字体大小为:30
*/
#  参数:
$arr = [
    #  水印图片路径(如果不存在将会被当成是字符串水印)
    'res'  => '小川编程',
    #  水印显示位置
    'pos'  => 3,
    #  不指定name(会覆盖原图,也就是保存成thumb.jpeg)
    'name' => './new1.jpg',  
    #  字体大小
    'fontSize'=>30,
    #  字体颜色
    'color'=>'255,255,0',
]; 
$res = Imgs::setWater('./1.jpg'$arr);
print_r($res);
?>

PHP+Mysql防止SQL注入的3种方法!

PHP+Mysql防止SQL注入的3种方法:

方法一:

mysql_real_escape_string — 转义 SQL 语句中使用的字符串中的特殊字符,并考虑到连接的当前字符集 !

使用方法如下:

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$sql = "select count(*) as ctr from users where username
='".mysql_real_escape_string($username)."' and 
password='". mysql_real_escape_string($pw)."' limit 1";

使用  mysql_real_escape_string() 作为用户输入的包装器,就可以避免用户输入中的任何恶意 SQL 注入。

方法二:

打开magic_quotes_gpc来防止SQL注入

php.ini中有一个设置:magic_quotes_gpc = Off
这个默认是关闭的,如果它打开后将自动把用户提交对sql的查询进行转换,
比如把 ‘ 转为 \’等,对于防止sql注射有重大作用。

如果magic_quotes_gpc=Off,则使用addslashes()函数

方法三:

自定义函数

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/**
* 防止sql注入自定义方法一
* author: xiaochuan
* @param: mixed $value 参数值
*/
function check_param($value=null) { 
        #  select|insert|update|delete|\'|\/\*|\*|\.\.\/|\.\/|union|into|load_file|outfile
    $str 'select|insert|and|or|update|delete|\'|\/\*|\*|\.\.\/|\.\/|union|into|load_file|outfile';
    if(!$value) {
        exit('没有参数!'); 
    }elseif(eregi($str$value)) { 
        exit('参数非法!');
    }
    return true; 
 
/**
* 防止sql注入自定义方法二
* author: xiaochuan
* @param: mixed $value 参数值
*/
function str_check( $value ) { 
    if(!get_magic_quotes_gpc()) { 
        // 进行过滤 
        $value addslashes($value); 
    
    $value str_replace("_""\_"$value); 
    $value str_replace("%""\%"$value); 
     
   return $value
 
/**
* 防止sql注入自定义方法三
* author: xiaochuan
* @param: mixed $value 参数值
*/
function post_check($value) { 
    if(!get_magic_quotes_gpc()) {
        // 进行过滤  
        $value addslashes($value);
    
    $value str_replace("_""\_"$value); 
    $value str_replace("%""\%"$value); 
    $value nl2br($value); 
    $value = htmlspecialchars($value); 
    return $value
}

Exactly what are Values of a Two-Year University.

Leading-edge schooling with this nation is immediately turning into a need while in the internet marketing business group as an alternative to an extravagance. Inside of the past the men and women who experienced a secondary faculty schooling continue to experienced the possibility to manufacture a excellent society for themselves as well as their family members. Individuals days are promptly turning into an additional dieing coal with the past. About the off probability that you choose to would want to have enormous attaining probable amid your life span you may be fully limited by your figuring out probable along with the degree of instruction you’ve gotten.

The uplifting information is you you should not ought to have a win or bust solution close to instruction. You’re able to launch by producing toddler strides with reference to leading-edge education. In the off opportunity you have a very junior faculty in the common vicinity, this can be undoubtedly one of the right assets for starting off your university instruction at any phase on your lifetime. Most junior faculties offer classes at various instances amid the working day and night, even some on Saturday always keeping in your mind the tip goal to oblige understudies of assorted ages and foundations.

Junior faculties besides that give you a incredible chance to get started your studying mission inside of a way that is certainly an incredible deal additional easily realistic into the common nationwide than an all out higher education. These educational institutions are to some outstanding extent worker schools but there will be one or two that allow understudies the working experience of dwelling on a university grounds at a noticeably lower charge than most genuine schools cost for that identical or basically the same as perks.

Junior colleges also allow you to examine your selections in the event that you are not usually certain what heading you wish for your personal instruction to acquire free of having to pay this kind of a huge price for the technique. In the event that you know the vocation way you would like to take it’s possible you’ll identify a two-year diploma program which may have you out of faculty and in a occupation substantially ahead of a four-year system will permit. Within the off opportunity that that may not enough information to suit your needs, a sizable part of the two-year assignments of analyze which might be made available at the junior faculty degree may perhaps just go easily into 4 year certification packages in the university stage.

Junior colleges give you a very good get started for a few people that are trying for innovative schooling irrespective of whether to assist their professions or simply to find out satisfaction on a person level in everyday life. You’ll notice quite a few outstanding assignments in specialized fields and scholarly fields that could be investigated and reports about the junior college amount.

For graduating secondary college understudies junior schools support understudies guide in to the alteration from secondary college to school not having going through just how of everyday living stun that a small number of faculties can set understudies because of. You will see that there are generally a number of prospects to meet instructive and in addition social desires within the junior faculty stage for understudies that are occupied with in search of following a junior university guidance.

You must likewise see that junior colleges are much a lot less demanding to investing close to placing aside finances and investment cash for possibly your very own school working out or perhaps the instructive expenditures of one’s kids. Acquiring them go to a junior higher education for any extensive time then exchanging into a University can spare a considerable amount of income and provides you a small amount of head that the young people are as however accepting a great stage of instruction.

Definitely, to the off opportunity that you are attempting to find an astounding top notch with regards to instruction you’ll do all by yourself or your children an personal injury in the event that you don’t appearance within the junior college possibilities in the basic vicinity prior to when dove in and jumping to the college way of lifetime. You’ll discover that junior schools routinely offer an equal degree of instruction for the important classes that 1st and 2nd 12 months undergrads regularly just take, they’re a vastly enhanced esteem to the income, and they are an remarkable characteristics for your men and women that are attempting to juggle their exercise with friends and family and work duties.