PHP batch replacement content or the content of all files in a specified directory_PHP tutorial

To replace the content in a string, we only need to use PHP related functions, such as strstr, str_replace, and regular expressions. Then if we want to replace the content of all files in the directory, we need to traverse the directory first, open the file, and then use the functions mentioned above. Replaced. First, let’s look at the most basic

strtr() function to convert specific characters in a string.

Grammar
strtr (string, from, to) or

strtr(string,array)

*/

The code is as follows

Copy code

代码如下	复制代码
$addr=strtr($addr,"","aao");        //第一种调用方法 $trans=array("hello"=>"hi","hi"=>"hello");      //定义一个转换数组 echo strtr("hi all, i said hello",$trans);       //第二种调用方法 //普通字符串 echo strtr("hilla warld","ia","eo"); //数组 $arr = array("hello" => "hi", "world" => "earth"); echo strtr("hello world",$arr);

$addr=strtr($addr,"","aao"); //The first calling method

$trans=array("hello"=>"hi","hi"=>"hello"); //Define a conversion array
echo strtr("hi all, i said hello",$trans); //Second calling method

//Ordinary string

echo strtr("hilla warld","ia","eo");

代码如下	复制代码
function file_modify($search_contents, $replace_contents, $filename) {         $fp = file_get_contents($filename);         $new_fp = str_replace($search_contents, $replace_contents, $fp);         file_put_contents($filename, $new_fp); } // +------ 用法 file_modify('sdf hjhj', 'sdf_test hjhj_test', 'test10.html');

//Array

$arr = array("hello" => "hi", "world" => "earth");

echo strtr("hello world",$arr);

代码如下	复制代码
preg_replace('|( )(^<]+)( )|iSU', "" . 替换后的内容 . "", $str);   preg_replace('|( )(^<]+)( )|iSU', "" . 替换后的内容 . "", $str);

/* If from and to are of different lengths, format to the shortest length. Look at a simple function again // +------ A replacement function I wrote before

The code is as follows	Copy code
function file_modify($search_contents, $replace_contents, $filename) {            $fp = file_get_contents($filename);          $new_fp = str_replace($search_contents, $replace_contents, $fp);            file_put_contents($filename, $new_fp); } // +------ Usage file_modify('sdf hjhj', 'sdf_test hjhj_test', 'test10.html');

Or use directly // Or use this directly

The code is as follows	Copy code
preg_replace('|( )(^<]+)( )|iSU', "${1}" . Replaced content. " $3", $str); preg_replace('|( )(^<]+)( )|iSU', "${1}" . Replaced content. " $3", $str);

All the problems I mentioned above will only replace the characters in one file, so I want to replace the specified characters in the files in all directories of a site, then let’s look at the following function

代码如下

复制代码

if (isset($_GET['dir'])){ //设置文件目录 $basedir=$_GET['dir']; }else{ $basedir = '.'; } $auto = 1; checkdir($basedir); function checkdir($basedir){ if ($dh = opendir($basedir)) { while (($file = readdir($dh)) !== false) { if ($file != '.' && $file != '..'){ if (!is_dir($basedir."/".$file)) { echo "filename: $basedir/$file ".checkBOM("$basedir/$file")." ";                     }else{                         $dirname = $basedir."/".$file;                         checkdir($dirname);                     }                 }             }             closedir($dh);         }     }     function checkBOM ($filename) {         global $auto;         $contents = file_get_contents($filename);         $charset[1] = substr($contents, 0, 1);         $charset[2] = substr($contents, 1, 1);         $charset[3] = substr($contents, 2, 1);         if (ord($charset[1]) == 239 && ord($charset[2]) == 187 && ord($charset[3]) == 191) {             if ($auto == 1) {                 $rest = substr($contents, 3);                 rewrite ($filename, $rest);                 return ("BOM found, automatically removed._http://www.hzhuti.com/nokia/c6/");             } else {                 return ("BOM found.");             }         }         else return ("BOM Not Found.");     }     function rewrite ($filename, $data) {         $filenum = fopen($filename, "w");         flock($filenum, LOCK_EX);         fwrite($filenum, $data);         fclose($filenum);     }     ?>

In this way, we can replace all the contents of all files in the specified directory just by running it. This is very convenient.

http://www.bkjia.com/PHPjc/631636.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/631636.htmlTechArticleTo replace the content in the string, we only need to use PHP related functions, such as strstr, str_replace, and regular expressions. Then if we want to replace the contents of all files in the directory, we need to traverse the directory first and then...