闲者博客 - PHP https://bk1314.com/tag/PHP/ PHP循环判断关键词是否存在,如果存在就跳过 https://bk1314.com/59.html 2022-03-06T00:09:15+08:00 1.设置关键词数组,也可以利用mysql调用得到$keyword_arr=['关键词1','关键词2','关键词3']2.建立个子程序方便调用function checKeyword($str='',$keyword_arr=[]){ foreach ($keyword_arr as $keyword) { if (strstr($str, $keyword) != FALSE)return true; //如果不需要区别大小写可以这么写 // if (strstr(strtolower($str), strtolower($keyword)) != FALSE)return true; } return false; }3.调用方式演示 $strtolowerbt="这里为内容查询这段是否有关键词包含"; if(checKeyword($strtolowerbt,$keyword_arr)) { continue; } php边压缩边下载 https://bk1314.com/58.html 2022-03-05T02:12:00+08:00 php实现边压缩边下载,原理大概就是,每压缩一个文件就输出给浏览器。实现压缩与下载同步进行。1.关键代码如下<?php //根据需求配置内存和执行时间 set_time_limit(360000); ini_set('memory_limit','20000M'); ob_clean();//洗干净开始干活 header("Content-Disposition: attachment; filename=".date('Y-m-d_hisa').".zip");//设置下载压缩包名称 require ('zip.class.php');//引用类这个类是phpmyadmin/libraries/zip.lib.php 这个的文件 引用记得删除头部的判断 //创建生成器 $zip = new ZipFile(); //开启流式压缩 $zip->setDoWrite(); $data1; define('BASE_PATH',str_replace('\\','/',realpath(dirname(__FILE__).'/'))."/");//去当前执行文件绝对路径 //define('WWWROOT',$_SERVER['DOCUMENT_ROOT']."/");//网站根目录,如果需要用这个直接屏蔽上面一行代码用这个变量 把下面BASE_PATH替换成WWWROOT即可 $lj=BASE_PATH."bbb";//设置需要打包的目录,方便下面替换避免压缩包把整个路径的文件夹创建 $filearr1 = list_file($lj);//所有待压缩的文件数组,一般只存路径即可 $filearr=toOneArray($filearr1);//多维数组改为一维数组 foreach ($filearr as $key => $value) { try{ //此处可以添加用户连接判断,若是用户取消了下载或断开了链接就终止操作 $url = $value; $file= file_get_contents($url);//获取文件内容,用file_get_content即可,这个是我自己封装的 $value=str_replace($lj."/", "", $value);//替换路径避免压缩包多余路径文件夹 $zip->addFile($file,iconv("utf-8","gbk",$value));//调用类的addFile开始压缩 ob_flush();//输出本次压缩的文件 }catch(Exception $e){ log($e); } } //输出zip文件尾部 $zip->file(); flush();//结束上传,缺少可能会引起压缩文件打不开 function list_file($date){ //1、首先先读取文件夹 $temp=scandir($date); //遍历文件夹 foreach($temp as $v){ $a=$date.'/'.$v; if($v=='.' || $v=='..'){//判断是否为系统隐藏的文件.和.. 如果是则跳过否则就继续往下走,防止无限循环再这里。 continue; } if(is_dir($a)){//如果是文件夹则执行 $data1[] = list_file($a);//因为是文件夹所以再次调用自己这个函数,把这个文件夹下的文件遍历出来 }else{ $data1[]=["imgpath"=>$a]; //加入到数组里准备返回(特别上面那个他是调用自身那么他也会返回多维数组出来) } } return $data1; } function toOneArray($array) { static $res_arr = []; foreach ($array as $v) { if (is_array($v)) { toOneArray($v); } else { $res_arr[] = $v; } } return $res_arr; } ?>2.引入压缩文件类zip.class.php,是phpMyadmin的压缩方法<?php /* vim: set expandtab sw=4 ts=4 sts=4: */ /** * Zip file creation * * @package PhpMyAdmin */ /** * Zip file creation class. * Makes zip files. * * @access public * @package PhpMyAdmin * @see Official ZIP file format: http://www.pkware.com/support/zip-app-note */ class ZipFile { /** * Whether to echo zip as it's built or return as string from -> file * * @var boolean $doWrite */ var $doWrite = false; /** * Array to store compressed data * * @var array $datasec */ var $datasec = array(); /** * Central directory * * @var array $ctrl_dir */ var $ctrl_dir = array(); /** * End of central directory record * * @var string $eof_ctrl_dir */ var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00"; /** * Last offset position * * @var integer $old_offset */ var $old_offset = 0; /** * Sets member variable this -> doWrite to true * - Should be called immediately after class instantiantion * - If set to true, then ZIP archive are echo'ed to STDOUT as each * file is added via this -> addfile(), and central directories are * echoed to STDOUT on final call to this -> file(). Also, * this -> file() returns an empty string so it is safe to issue a * "echo $zipfile;" command * * @access public * * @return void */ function setDoWrite() { $this -> doWrite = true; } // end of the 'setDoWrite()' method /** * Converts an Unix timestamp to a four byte DOS date and time format (date * in high two bytes, time in low two bytes allowing magnitude comparison). * * @param integer $unixtime the current Unix timestamp * * @return integer the current date in a four byte DOS format * * @access private */ function unix2DosTime($unixtime = 0) { $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime); if ($timearray['year'] < 1980) { $timearray['year'] = 1980; $timearray['mon'] = 1; $timearray['mday'] = 1; $timearray['hours'] = 0; $timearray['minutes'] = 0; $timearray['seconds'] = 0; } // end if return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) | ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1); } // end of the 'unix2DosTime()' method /** * Adds "file" to archive * * @param string $data file contents * @param string $name name of the file in the archive (may contains the path) * @param integer $time the current timestamp * * @access public * * @return void */ function addFile($data, $name, $time = 0) { $name = str_replace('\\', '/', $name); $dtime = substr("00000000" . dechex($this->unix2DosTime($time)), -8); $hexdtime = '\x' . $dtime[6] . $dtime[7] . '\x' . $dtime[4] . $dtime[5] . '\x' . $dtime[2] . $dtime[3] . '\x' . $dtime[0] . $dtime[1]; eval('$hexdtime = "' . $hexdtime . '";'); $fr = "\x50\x4b\x03\x04"; $fr .= "\x14\x00"; // ver needed to extract $fr .= "\x00\x00"; // gen purpose bit flag $fr .= "\x08\x00"; // compression method $fr .= $hexdtime; // last mod time and date // "local file header" segment $unc_len = strlen($data); $crc = crc32($data); $zdata = gzcompress($data); $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug $c_len = strlen($zdata); $fr .= pack('V', $crc); // crc32 $fr .= pack('V', $c_len); // compressed filesize $fr .= pack('V', $unc_len); // uncompressed filesize $fr .= pack('v', strlen($name)); // length of filename $fr .= pack('v', 0); // extra field length $fr .= $name; // "file data" segment $fr .= $zdata; // echo this entry on the fly, ... if ( $this -> doWrite) { echo $fr; } else { // ... OR add this entry to array $this -> datasec[] = $fr; } // now add to central directory record $cdrec = "\x50\x4b\x01\x02"; $cdrec .= "\x00\x00"; // version made by $cdrec .= "\x14\x00"; // version needed to extract $cdrec .= "\x00\x00"; // gen purpose bit flag $cdrec .= "\x08\x00"; // compression method $cdrec .= $hexdtime; // last mod time & date $cdrec .= pack('V', $crc); // crc32 $cdrec .= pack('V', $c_len); // compressed filesize $cdrec .= pack('V', $unc_len); // uncompressed filesize $cdrec .= pack('v', strlen($name)); // length of filename $cdrec .= pack('v', 0); // extra field length $cdrec .= pack('v', 0); // file comment length $cdrec .= pack('v', 0); // disk number start $cdrec .= pack('v', 0); // internal file attributes $cdrec .= pack('V', 32); // external file attributes // - 'archive' bit set $cdrec .= pack('V', $this -> old_offset); // relative offset of local header $this -> old_offset += strlen($fr); $cdrec .= $name; // optional extra field, file comment goes here // save to central directory $this -> ctrl_dir[] = $cdrec; } // end of the 'addFile()' method /** * Echo central dir if ->doWrite==true, else build string to return * * @return string if ->doWrite {empty string} else the ZIP file contents * * @access public */ function file() { $ctrldir = implode('', $this -> ctrl_dir); $header = $ctrldir . $this -> eof_ctrl_dir . pack('v', sizeof($this -> ctrl_dir)) . //total #of entries "on this disk" pack('v', sizeof($this -> ctrl_dir)) . //total #of entries overall pack('V', strlen($ctrldir)) . //size of central dir pack('V', $this -> old_offset) . //offset to start of central dir "\x00\x00"; //.zip file comment length if ( $this -> doWrite ) { // Send central directory & end ctrl dir to STDOUT echo $header; return ""; // Return empty string } else { // Return entire ZIP archive as string $data = implode('', $this -> datasec); return $data . $header; } } // end of the 'file()' method } // end of the 'ZipFile' class ?> 由于POST请求过大导致PHP7无法正常处理解决办法 https://bk1314.com/55.html 2022-03-03T15:40:00+08:00 概述在巡检优化过程中,发现POST请求至PHP接口处理时,php服务无法读取到请求内容。通过php.ini开启display_errors = Off后发现页面输出如下内容:<br /> <b>Notice</b>: file_get_contents(): file created in the system's temporary directory in <b>/var/www/html/api.php</b> on line <b>10</b><br /> <br /> <b>Warning</b>: file_get_contents(): Unable to create temporary file, Check permissions in temporary files directory. in <b>/var/www/html/api.php</b> on line <b>10</b><br />解决办法由于sys_temp_dir和upload_tmp_dir设置的临时目录不存在,mkdir后修改目录权限即可。[scode type="share"]来源于:闲云博客[/scode] shell脚本每天自动备份mysql数据库命令mysqldump https://bk1314.com/50.html 2022-02-28T18:53:37+08:00 一、mysql提供了一个mysqldump的工具可以方便的导出导入数据库信息二、使用命令行shell测试执行mysqldump,理解必备的参数,查看生成的sql备份文件是否符合需求/usr/bin/mysqldump --opt -ubatsing -pbatsingpw -hlocalhost timepusher > /mnt/mysqlBackup/db_`date +%F`.sql注解:1、执行 /usr/bin/mysqldump2、--opt是quick,add-drop-table,add-locks,extended-insert,lock-tables几个参数的合称,一般都要使用,具体意思自行搜索3、-u数据库用户名 -p数据库用户密码 -h数据库地址 数据库名 > 导出的文件路径4、date +%F是shell中生成当前日期,格式如2015-11-05,所以成功导出时生成的文件名为 db_2015-11-05.sql5、下载生成的 sql文件 ,用文本编辑器打开检查,本地导入测试数据库,看是否有问题三、整理编写比较灵活的shell脚本,方便重用#!/bin/sh # Database info DB_USER="batsing" DB_PASS="batsingpw" DB_HOST="localhost" DB_NAME="timepusher" # Others vars BIN_DIR="/usr/bin" #the mysql bin path BCK_DIR="/mnt/mysqlBackup" #the backup file directory DATE=`date +%F` # TODO # /usr/bin/mysqldump --opt -ubatsing -pbatsingpw -hlocalhost timepusher > /mnt/mysqlBackup/db_`date +%F`.sql $BIN_DIR/mysqldump --opt -u$DB_USER -p$DB_PASS -h$DB_HOST $DB_NAME > $BCK_DIR/db_$DATE.sql #还原数据库 #用mysql-front导入前一天的 *.sql 文件即可恢复数据保存到文件或上传到 /usr/local/apache/htdocs/timepusher/sqlBak/sqlAutoBak.sh四、测试Shell脚本1、进入到该脚本文件目录 chmod +x sqlAutoBak.sh 添加执行权限,否则会报错 Permission denied2、./sqlAutoBak.sh ,如果是在windows编写上传的文件可能会报错/bin/sh^M: bad interpreter: No such file or directory这是不同系统编码格式引起的:在 windows系统中编辑的 .sh文件可能有不可见字符,所以在 Linux系统下执行会报以上异常信息。可以在Windows上使用Notepad++转换成Unix格式(菜单中选择:编辑>档案格式转换>转换成UNIX)3、修改后上传继续执行 ./sqlAutoBak.sh ,没有报错。再查看导出的sql文件。五、压缩mysql的备份数据1、查看导出来的sql文件,发现其文件大小非常大,mysqldump也提供了生成gzip压缩文件的参数设置2、sqlAutoBak.sh修改为如下#!/bin/sh # Database info DB_USER="batsing" DB_PASS="batsingpw" DB_HOST="localhost" DB_NAME="timepusher" # Others vars BIN_DIR="/usr/bin" #the mysql bin path BCK_DIR="/mnt/mysqlBackup" #the backup file directory DATE=`date +%F` # TODO # /usr/bin/mysqldump --opt -ubatsing -pbatsingpw -hlocalhost timepusher > /mnt/mysqlBackup/db_`date +%F`.sql # $BIN_DIR/mysqldump --opt -u$DB_USER -p$DB_PASS -h$DB_HOST $DB_NAME > $BCK_DIR/db_$DATE.sql $BIN_DIR/mysqldump --opt -u$DB_USER -p$DB_PASS -h$DB_HOST $DB_NAME | gzip > $BCK_DIR/db_$DATE.sql.zip # 还原数据库 # 把 *.sql.zip 使用gunzip 或 本地的解压软件 解压为 *.sql 文件 # 用mysql-front导入前一天的 *.sql 文件即可恢复数据3、修改后上传继续执行 ./sqlAutoBak.sh ,没有报错。如果用文本编辑器查看导出的 *.sql.gz文件,应该是一堆乱码。4、下载到本地使用解压软件打开,解压就能看到里面真正的 *.sql 文件了。六、设置linux定时任务执行该脚本1、编辑定时任务列表crontab -e2、插入下面这一行,因为通常来说5点钟网站的访问量最低00 05 * * * /bin/sh /usr/local/apache/htdocs/timepusher/sqlBak/sqlAutoBak.sh #每天早上 5:00am 执行3、查看任务是否创建成功crontab -l七、第二天检查自动生成的sql文件是否符合要求如果生成的文件和解压出来查看没有问题,那么这个自动定时备份数据库的脚本就算是完成了。因为生成的文件多了会占用一定的空间,所以建议要定期(比如一个月)清理一下文件。$、补充1、如果该数据库的用户没有分配 锁表 的权限,则备份会报错 when using LOCK TABLES 。那是因为mysqldump命令默认在导出时是要锁定表的,所以解决方式有两个。一个是给该用户开放 锁表 的权限;另一个是在命令中加上 --skip-lock-tables 这个参数。即是:$BIN_DIR/mysqldump --opt -u$DB_USER -p$DB_PASS -h$DB_HOST $DB_NAME --skip-lock-tables | gzip > $BCK_DIR/db_$DATE.sql.gz PHP循环遇到关键词就跳过分享 https://bk1314.com/46.html 2022-02-26T17:36:47+08:00 $keyword_arr=['词1','词2','词3']; //也可以上面数据库存入 function checKeyword($str='',$keyword_arr=[]){ foreach ($keyword_arr as $keyword) { //var_dump($keyword); if (strstr($str, $keyword) != FALSE)return true; } return false; } while($r = mysql_fetch_array($query)){ $bt=$r['ybt'];//标题 $strtolowerbt=strtolower($bt); if(checKeyword($strtolowerbt,$keyword_arr)) { continue; } } php 冷门api goto https://bk1314.com/45.html 2022-02-26T10:14:07+08:00 <?php echo "start"; echo "<hr/>"; goto TEST; echo "<hr/>"; TEST: echo "end"; //goto 不能跳入循环 switch。。。case 函数和类都不可以 //但是可以跳出循环 php 判断是否是https或者http 直接获取域名 https://bk1314.com/44.html 2022-02-26T10:11:19+08:00 //主动判断是否HTTPS function isHTTPS() { if (defined('HTTPS') && HTTPS) return true; if (!isset($_SERVER)) return FALSE; if (!isset($_SERVER['HTTPS'])) return FALSE; if ($_SERVER['HTTPS'] === 1) { //Apache return TRUE; } elseif ($_SERVER['HTTPS'] === 'on') { //IIS return TRUE; } elseif ($_SERVER['SERVER_PORT'] == 443) { //其他 return TRUE; } return FALSE; }$codepay_config['host'] = (isHTTPS() ? 'https://' : 'http://') . $_SERVER['HTTP_HOST']; //获取域名 PHP压缩和解压代码段 https://bk1314.com/43.html 2022-02-25T18:59:25+08:00 [scode type="green"]PHP文件 Zip 压缩[/scode]<?php /* creates a compressed zip file */ function create_zip($files = array(),$destination = '',$overwrite = false) { //if the zip file already exists and overwrite is false, return false if (file_exists($destination) && !$overwrite) { return false; } //vars $valid_files = array(); //if files were passed in... if (is_array($files)) { //cycle through each file foreach ($files as $file) { //make sure the file exists if (file_exists($file)) { $valid_files[] = $file; } } } //if we have good files... if (count($valid_files)) { //create the archive $zip = new ZipArchive(); if ($zip->open($destination,$overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) { return false; } //add the files foreach ($valid_files as $file) { $zip->addFile($file,$file); } //debug //echo 'The zip archive contains ',$zip->numFiles,' files with a status of ',$zip->status; //close the zip -- done! $zip->close(); //check to make sure the file exists return file_exists($destination); } else { return false; } } /***** Example Usage ***/ $files = array('file1.jpg', 'file2.jpg', 'file3.gif'); create_zip($files, 'myzipfile.zip', true); ?>[scode type="green"]PHP解压缩 Zip文件[/scode]<?php /** * @param $file - path to zip file * @parm $destination - destination directory for unzipped files */ function unzip_file($file, $destination) { // create object $zip = new ZipArchive() ; // open archive if ($zip->open($file) !== TRUE) { die ('Could not open archive'); } // extract contents to destination directory $zip->extractTo($destination); // close archive $zip->close(); echo 'Archive extracted to directory'; } ?> PHP寻找两个字符串的相似性 https://bk1314.com/42.html 2022-02-25T18:57:11+08:00 [scode type="blue"]PHP 提供了一个极少使用的 similar_text 函数,但此函数非常有用,用于比较两个字符串并返回相似程度的百分比。[/scode]<?php similar_text($string1, $string2, $percent); //$percent will have the percentage of similarity ?> PHP强制性文件下载 https://bk1314.com/41.html 2022-02-25T18:54:59+08:00 <?php /** *@param $file - path to file */ function force_download($file) { if ((isset($file)) && (file_exists($file))) { header("Content-length: " . filesize($file)); header('Content-Type: application/octet-stream'); header('Content-Disposition: attachment; filename="' . $file . '"'); readfile("$file"); } else { echo "No file selected"; } } ?>