本文实例讲述了PHP中FTP相关函数。分享给大家供大家参考，具体如下：

<?php
set_time_limit(0);
//转存本地地址
define(
  "STORE_PATH",
  dirname(__FILE__) . "/../../../../temp_data/test/"
);
define("LIST_PATH", STORE_PATH . "list/");
define("CHAPTER_PATH", LIST_PATH . "chapter/");
define("DETAIL_PATH", LIST_PATH . "detail/");
createFolder(STORE_PATH);
createFolder(LIST_PATH);
createFolder(CHAPTER_PATH);
createFolder(DETAIL_PATH);
$ftp_server = "ip";
$ftp_user = "anonymous";
$ftp_pass = "anonymous";
$conn_id = ftp_connect ( $ftp_server ) or die ( "Couldn"t connect to $ftp_server" );
if (@ftp_login ( $conn_id, $ftp_user, $ftp_pass )) {
echo "Connected as $ftp_user@$ftp_server
";
} else {
echo "Couldn"t connect as $ftp_user
";
}
ftp_pasv($conn_id, true);
/**
 * 创建文件并写入内容
 *
 * @param string $path   path/
 * @param string $fileName filename
 * @param string $data   content
 *
 * @return string 返回路径
 */
function createFile ($path, $fileName, $data)
{
  if (empty($data)) {
    return false;
  }
  file_put_contents($path . $fileName, $data);
  return $path . $fileName;
}
/**
 * 创建目录
 *
 * @param string $path path
 *
 * @return no
 */
function createFolder ($path)
{
  if (! file_exists($path)) {
    createFolder(dirname($path));
    if (mkdir($path, 0777)) {
      echo "
 dir not find ,make dir " . dirname($path) . " is ok!";
    } else {
      echo "
 dir not find ,make dir " . dirname($path) . " is fail!";
    }
  }
}
/**
 * 抓取电子书籍的类别
 *
 * @param string $xmlUrl    xml地址
 * @param string $saveFileName 文件名称
 *
 * @return string 返回路径
 */
function getClassXml ($conn_id,$categoryDir, $saveFileName = "category.xml")
{
  //获取顶级栏目
$clist = getDirListFormFtp($conn_id, $categoryDir);
$itemTPL = "<Item><ID>%s</ID><Name>%s</Name></Item>";
$items="";
foreach ($clist as $key=>$value){
$items .=sprintf($itemTPL,$value["name"],$value["detail"]);
}
$bodyTPL="<Tofo><Class>%s</Class></Tofo>";
$data = sprintf($bodyTPL,$items);
  echo "
".createFile(STORE_PATH, $saveFileName, $data);
}
set_time_limit(0);
$start_time = time();
$bookCache=array();
$categoryDir = "\tingshu\web";
getClassXml($conn_id,$categoryDir);
//获取顶级栏目
$clist = getDirListFormFtp($conn_id, $categoryDir);
//获取二级栏目分类
foreach ($clist as $key=>$value){
$_secondCateoryDir = $categoryDir."\".$value["name"];
$_secondCateorylist = getDirListFormFtp($conn_id, $_secondCateoryDir);
$listData="";
$listTPL="<Tofo><Class><ID>%s</ID><Name>%s</Name><Books>%s</Books></Class></Tofo>";
$items ="<Item><ID>%s</ID><Name>%s</Name></Item>";
$listItemString="";
//获取详细书籍章节列表
foreach ($_secondCateorylist as $key=>$book){
$listItemString.=sprintf($items,$book["name"], $book["detail"]);
$_bookListDir = $_secondCateoryDir."\".$book["name"];
$chapters = getBook($conn_id,$_bookListDir);
//生产book章节html
getBookofChapter ($book,$chapters);
//缓存bookid和章节信息
$bookCache[$book["name"]] = array("category"=>$value["name"],"chapters"=>$chapters);
}
//生成二级栏目列表页
$listData = sprintf($listTPL, $value["name"], $value["detail"],$listItemString);
$list_save_path = $value["name"] . ".xml";
  echo "
".createFile(LIST_PATH, $list_save_path, $listData);
}
$arrString = "<?php 
 $bookCache=".var_export($bookCache, true).";
?>";
echo "
建立缓存文件：".createFile(STORE_PATH, "bookcache.php", $arrString);
/**
 * 抓取书籍章节信息
 *
 * @param array $bookIds 书籍章节信息
 *
 * @return boolean 返回是否抓取成功
 */
function getBookofChapter ($bookinfo,$chapters)
{
  if (! is_array($chapters)) {
    return false;
  }
  $bookData = "";
$bookTPL = "<Tofo><Books><ID>%s</ID><Name>%s</Name><Volumes>%s</Volumes></Books></Tofo>";
  $bookItemTPL="<Item><ID>%s</ID><Name>%s</Name></Item>";
  //<Play>%s</Play>
//<Download>%s</Download>
//,$item["downurl"],$item["downurl"]
  $chapterString="";
foreach ($chapters as $key=>$item){
  $chapterString.=sprintf($bookItemTPL,$item["name"],$item["detail"]);
  }
  //生成二级栏目列表页
$bookData = sprintf($bookTPL, $bookinfo["name"], $bookinfo["detail"],$chapterString);
 $book_chapter_save_path = $bookinfo["name"] . ".xml";
  if (! empty($bookData)) {
    echo "
".createFile(CHAPTER_PATH, $book_chapter_save_path, $bookData);
  }
  return true;
}
function getBook($conn_id,$_bookListDir){
$chapter=array();
$buff = ftp_nlist ( $conn_id, $_bookListDir );
if(is_array($buff)){
$resourceArray = array();
foreach ($buff as $key=>$value){
if(strstr( $value, ".txt" )){
}else{
$resourcesName = str_replace($_bookListDir."\", "", $value);
$temp = preg_split ( "/./",$resourcesName);
$resourceArray[trim($temp[0])]=$resourcesName;
}
}
foreach ($buff as $key=>$value){
if(strstr( $value, ".txt" )){
$name = trim(str_replace(".txt","",str_replace($_bookListDir."\", "", $value)));
$chapter[$name] = array (
"name" => $name,
"detail" => getFileContentsFormFtp ( $conn_id, $value ),
"downurl" =>$resourceArray[$name]
);
}
}
}
ksort($chapter , SORT_NUMERIC);
echo "
";
var_dump("chapter index :".implode(array_keys ($chapter), ","));
echo "
";
return $chapter;
}
function getDirListFormFtp($conn_id, $categoryDir) {
$categoryArray = array ();
$dirs = getDirNameFormFtp ( $conn_id, $categoryDir );
//获取分类描述
foreach ( $dirs as $key => $value ) {
$path = $categoryDir . "\" . $value . ".txt";
$categoryArray [] = array ("name" => $value, "detail" => getFileContentsFormFtp ( $conn_id, $path ) );
}
return $categoryArray;
}
function getFileContentsFormFtp($conn_id, $server_file) {
$_tempFileName = STORE_PATH."temp.tmp";
$content = "";
try {
if (ftp_get ( $conn_id, $_tempFileName, $server_file, FTP_ASCII )) {
$content = file_get_contents ( $_tempFileName );
}
} catch (Exception $e) {
var_dump("error timeout:-----");
global $ftp_server;
$conn_id = ftp_connect ( $ftp_server );
if (@ftp_login ( $conn_id, $ftp_user, $ftp_pass )) {
echo "Connected as $ftp_user@$ftp_server
";
} else {
echo "Couldn"t connect as $ftp_user
";
}
ftp_pasv($conn_id, true);
if (ftp_get ( $conn_id, $_tempFileName, $server_file, FTP_ASCII )) {
$content = file_get_contents ( $_tempFileName );
}
}
$content = iconv ( "GBK", "UTF-8//IGNORE", trim($content) );
echo "
";
var_dump("file name :".$server_file.";content:".$content);
return $content;
}
function getDirNameFormFtp($conn_id, $dirString) {
$buff = ftp_rawlist ( $conn_id, $dirString );
$dirs = array_filter ( $buff, "dirfilter" );
foreach ( $dirs as $key => $value ) {
$temp = preg_split ( "/<DIR>/", $value );
$dirs [$key] = trim ( $temp [1] );
}
asort($dirs , SORT_NUMERIC);
return $dirs;
}
function dirfilter($var) {
return (strstr ( $var, "<DIR>" ));
}
ftp_close ( $conn_id );

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希望本文所述对大家PHP程序设计有所帮助。