全文搜索和替换

1   
2exec("/bin/grep -r '$oldword' $rootpath", $results, $errorCode);   
3if ($errorCode){   
4if ($errorCode == 1){   
5echo "Possibly no files were found with $oldword in them

1\n";   
2}   
3echo "OS Error: $errorCode

1\n";   
2echo "Check 'man errno' and count down

1\n";   
2echo "Usually paths/permissions

1\n";   
2}   
3while (list(,$path) = each($results)){   
4$parts = explode(':', $path);   
5$path = $parts[0];   
6$fp = fopen($path, 'r') or print("Cannot read $path

1\n");   
2if ($fp){   
3$data = fread($fp, filesize($path));   
4fclose($fp);   
5$newdata = str_replace($oldword, $newword, $data);   
6$fp = fopen($path, 'w') or print("Cannot write $path

1\n");   
2if ($fp){   
3fwrite($fp, $newdata);   
4fclose($fp);   
5echo $path, "

1\n";   
2}   
3}   
4}