php 全文搜索和实现替换的代码

<?php

　　exec("/bin/grep -r '$oldword' $rootpath", $results, $errorCode);
　　if ($errorCode){
　　if ($errorCode == 1){
　　echo "Possibly no files were found with ?$oldword in them
\n";
　　}
　　echo "OS Error: $errorCode
\n";
　　echo "Check 'man errno' and count down
\n";
　　echo "Usually paths/permissions
\n";
　　}
　　while (list(,$path) = each($results)){
　　$parts = explode(':', $path);
　　$path = $parts[0];
　　$fp = fopen($path, 'r') or print("Cannot read $path
\n");
　　if ($fp){
　　$data = fread($fp, filesize($path));
　　fclose($fp);
　　$newdata = str_replace($oldword, $newword, $data);
　　$fp = fopen($path, 'w') or print("Cannot write $path
\n");
　　if ($fp){
　　fwrite($fp, $newdata);
　　fclose($fp);
　　echo $path, "
\n";
　　}
　　}
　　}
　　?>

原文地址:http://www.corange.cn/archives/2009/10/3475.html