安装pman

使用传说中的pear来安装pman

sudo pear install doc.php.net/pman

如果pear版本比较老，需要先升级pear才可以继续

sudo pear upgrade pear

pman使用方法

pman的使用方法很傻瓜，比如我们想查看strlen的帮助信息:

pman strlen

帮助文本的内容是彩色的，能和chm版本的php帮助文档媲美。pman的详细使用帮助如下

#pman --help
man, version 1.6c

usage: man [-adfhktwW] [section] [-M path] [-P pager] [-S list]
	[-m system] [-p string] name ...

  a : find all matching entries
  c : do not use cat file
  d : print gobs of debugging information
  D : as for -d, but also display the pages
  f : same as whatis(1)
  h : print this help message
  k : same as apropos(1)
  K : search for a string in all pages
  t : use troff to format pages for printing
  w : print location of man page(s) that would be displayed
      (if no name given: print directories that would be searched)
  W : as for -w, but display filenames only

  C file   : use `file' as configuration file
  M path   : set search path for manual pages to `path'
  P pager  : use program `pager' to display pages
  S list   : colon separated section list
  m system : search for alternate system's man pages
  p string : string tells which preprocessors to run
               e - [n]eqn(1)   p - pic(1)    t - tbl(1)
               g - grap(1)     r - refer(1)  v - vgrind(1)

还有一个好处是在vim里查看php帮助信息更方便了，结合完美

:!pman strlen

Q. Why PHP needs namespaces?
A. Because long names like PEAR_Form_Loader_Validate_Table_Element_Validator_Exception are really tiresome.

Q. What is the main goal of the namespace implementation?
A. To solve the problem above.

Q. What “namespace X::Y::Z” means?
A: 1. All class/function/method names are prefixed with X::Y::Z.
2. All class/function/method names are resolved first against X::Y::Z.

Q. What “import X::Y::Z as Foo” means?
A. Every time there’s Foo as a class/function name or prefix to the name, it really means X::Y::Z

Q. What “import X::Y::Z” means?
A. “import X::Y::Z as Z”, then see above.

Q. What “import Foo” means?
A. Nothing.

Q. What is the scope of namespace and import?
A. Current file.

Q. Can same namespace be used in multiple files?
A. Yes.

Q. Is there any relation between namespaces X::Y::Z and X::Y?
A. Only in programmer’s mind.

Q. How do I import all classes from namespace X::Y::Z into global space?
A. You don’t, since it brings back the global space pollution problem.
Instead, you import X::Y::Z and then prefix your classes with Z::.

Q. But doesn’t it mean I will still have long names?
A. Not longer then three elements: Namespace::Class::Element.

Q. Why it is not implemented like in <insert your favorite language here>?
A. Because PHP is not <insert your favorite language here>

php是否需要namespace，我想第一条理由已经显得很充分了。用过PEAR的可能会对其中超长的class命名印象深刻，所以在PEAR2的Code standing中，也隐约提到可能会利用namespaces以及__autoload来缩短class名。

原文:Namespaces FAQ

其它方法貌似一致。

首先在自己的home下创建一份pear的配置文件.pearrc:

$ pear config-create $HOME .pearrc

如果一切顺利的话，直接进行下一步，否则运行一下下列命令：

$ pear config-set download_dir /home/(username)/tmp/pear/cache
$ pear config-set cache_dir /home/(username)/tmp/pear/cache
$ pear config-set temp_dir /home/(username)/tmp/pear/temp

接着就可以开始安装pear了，这会连着pear的依赖文件一块安装：

$ pear install -o PEAR

经过这一步,pear已经安装完成，如果你还希望安装其它的package，那么：

$ pear install pear/PackageName

这样你就有了一份自己定制的pear包，为了在程序中调用到这些pear，你需要多谢写一些额外的代码，毕竟这些代码还不在你的include_path中。

php4

ini_set(
  'include_path',
  ini_get( 'include_path' ) . PATH_SEPARATOR . "/home/(youruser)/pear/php"
);

php5

set_include_path(
	get_include_path() .
	PATH_SEPARATOR . '/home/(youruser)/pear/php'
);

用法

<?php
require_once 'PHP/Compat.php';

// load file_put_contents
PHP_Compat::loadFunction('file_put_contents');

// load str_split, array_chunk and file_get_contents
PHP_Compat::loadFunction(array('str_split', 'array_chunk', 'file_get_contents'));
?>

上面的例子说明,可以一次载入n个php5特有函数

Package Information: PHP_Compat

http://pear.php.net/package/PHP_Compat

Pager and Javascript

现在走出第一步，Pager已经能够构建出javascript的链接了，和Ajax整合，理论上应该也是能够实现的，下面是Pager和javascript分页的一个例子：

require_once 'Pager/Pager.php';
$data = range(1, 100); //an array of data to paginate
$pager_params = array(
    'mode'     => 'Sliding',
    'append'   => false,  //don't append the GET parameters to the url
    'path'     => '',
    'fileName' => 'javascript:revealDiv(%d)',  //Pager replaces "%d" with the page number...
    'perPage'  => 10, //show 10 items per page
    'delta'    => 5,
    'itemData' => $data,
);
$pager = & Pager::factory($pager_params);
$n_pages = $pager->numPages();
$links = $pager->getLinks();
?>
<html>
<head>
    <script type="text/javascript" language="javascript">
    var n_pages = <?php echo $n_pages ?>;
    function revealDiv(n)
    {
        for (var count = 1; count <= n_pages; count++) {
          document.getElementById("page"+count).style.display = 'none';
        }
        document.getElementById("page"+n).style.display = 'block';
    }
    </script>
    <style type="text/css">
    div.page {
      background: #FFFF99;
      border-top: 1px solid #FFBF99;
      border-bottom: 1px solid #FFBF99;
    }
    </style>
</head>
<body>
<h1>PEAR::Pager example with JavaScript</h1>
<?php echo $links['pages']; ?>
<hr />
<?php
for ($i=1; $i <= $n_pages; ++$i) {
    echo '<div class="page" id="page'.$i.'">';
    echo '<h2>Page '.$i.'</h2>';
    foreach ($pager->getPageData($i) as $item) {
        echo 'Item '.$item.'<br />';
    }
    echo '</div>';
}
?>
<hr />
<script type="text/javascript" language="javascript">
revealDiv(1);
</script>
</body>
</html>

例子中把分页的所有数据放入一个div标签，定义了两个比较重要的参数就是path（为空）和fileName,fileName原本应该是链接的文件名，但是这里用javascript替换了。

Ajax上阵

这个例子包括三个文件page.html,server.php,testdata.php

用动态javascript–server.php来处理数据，调用HTML_AJAX.replace(‘target’, ‘testdata.php’)来替换id为target这个div的内容。

<html>
<body>
<h1>PEAR::Pager example with AJAX</h1>

<script type="text/javascript" src="server.php?client=all"></script>

<div id="target">I'm the target</div>

<script type="text/javascript">
    HTML_AJAX.replace('target', 'testdata.php');
</script>

</body>
</html>

这是个很简单的php程序，取到分页数据并输出html

<?php
require_once 'Pager/Pager.php';
$data = range(1, 100); //an array of data to paginate
$pager_params = array(
    'mode'     => 'Sliding',
    'append'   => false,  //don't append the GET parameters to the url
    'path'     => '',
    'fileName' => 'javascript:HTML_AJAX.replace('target','testdata.php?pageID=%d');',  //Pager replaces "%d" with the page number...
    'perPage'  => 10, //show 10 items per page
    'delta'    => 1,
    'itemData' => $data,
);
$pager = & Pager::factory($pager_params);
$n_pages = $pager->numPages();
$links = $pager->getLinks();
echo '<p>This container is loaded with an AJAX call</p>';
echo '<p><span class="datetime">DateTime: '. date('Y-m-d H:i:s') .'</span></p>';
echo '<h3>Page '. $pager->getCurrentPageId() .'</h3>';
foreach ($pager->getPageData() as $item) {
    echo 'Item '. $item .'<br />';
}
echo '<hr />'.$pager->links;
?>

用HTML_AJAX_Server来处理ajax这些烦心事吧

<?php
include 'HTML/AJAX/Server.php';

$server = new HTML_AJAX_Server();
$server->handleRequest();
?>

web 2.0, Ajax的趋势图

时下的web 2.0和Ajax概念正是如火如荼，且不论Ajax这东东到底是不是炒作的产物，就实际应用来说，Ajax在某些场合的确是顶好用而且看上去挺酷.

蓝的是web 2.0,红的是Ajax

参考文档

http://www.alberton.info/pear_pager_tutorial_javascript_navigation.html

例子1

<?php
require_once 'Pager/Pager.php';
$params = array(
    'mode'       => 'Jumping',
    'perPage'    => 3,
    'delta'      => 2,
    'itemData'   => array('a','b','c','d','e',[...omissis...],'z')
);
$pager = & Pager::factory($params);
$data  = $pager->getPageData();
$links = $pager->getLinks();
//$links is an ordered+associative array with 'back'/'pages'/'next'/'first'/'last'/'all' links
//NB: $links['all'] is the same as $pager->links;

//echo links to other pages:
echo $links['all'];

//Pager can also generate <link rel="first|prev|next|last"> tags
echo $pager->linkTags;

//Show data for current page:
echo 'PAGED DATA: ' ; print_r($data);

//Results from methods:
echo 'getCurrentPageID()...: '; var_dump($pager->getCurrentPageID());
echo 'getNextPageID()......: '; var_dump($pager->getNextPageID());
echo 'getPreviousPageID()..: '; var_dump($pager->getPreviousPageID());
echo 'numItems()...........: '; var_dump($pager->numItems());
echo 'numPages()...........: '; var_dump($pager->numPages());
echo 'isFirstPage()........: '; var_dump($pager->isFirstPage());
echo 'isLastPage().........: '; var_dump($pager->isLastPage());
echo 'isLastPageComplete().: '; var_dump($pager->isLastPageComplete());
echo '$pager->range........: '; var_dump($pager->range);
?>

Pager的使用,只要调整$param数组的参数,就可以应付很多种分页情况了.代码中的$links数组包含了一些链接,如上一页/页码/下一页/第一页/末页/全部.

例2

如今许多网站为了SEO,把动态页使用rewrite规则伪造成静态页的形式,例如下面这个.htaccess配置:

RewriteEngine on
#Options FollowSymlinks

RewriteBase /
RewriteRule ^articles/([a-z]{1,12})/art([0-9]{1,4})\.html$ /article.php?num=$2&month=$1 [L]

即使在这种情况下,Pager分页仍然有办法工作,见下面的code

<?php
require_once 'Pager/Pager.php';

//first pager
$params1 = array(
    'perPage'    => 3,
    'urlVar'     => pageID_articles,  //1st identifier
    'itemData'   => $someArray
);
$pager1 = & Pager::factory($params1);
$data1  = $pager1->getPageData();
$links1 = $pager1->getLinks();

//second pager
$params2 = array(
    'perPage'    => 8,
    'urlVar'     => pageID_news,      //2nd identifier
    'itemData'   => $someOtherArray
);
$pager2 = & Pager::factory($params2);
$data2  = $pager2->getPageData();
$links2 = $pager2->getLinks();
?>

通过配置$param,就能够把链接 “/articles/march/art15.html”对应到链接”/article.php?num=15&month=march” ,比较灵活的表现

扩展性

Pager类的扩展性,平心而论,也是不错的.比如以前写的path方式的分页类 – Pager::Pathing(),这个方法就是从Pager上扩展而来,满足了当时的需求.

通过ssh安装pear

国内绝大部分虚拟主机都不提供ssh,但若是朋友的服务器,可能会比较放宽一点给你权限.下面看看通过ssh在虚拟主机上安装pear的步骤:

• PEAR 1.3.5或以下:

  $ pear -s -c ~/.pearrc -d doc_dir=~/pear/docs \
      -d ext_dir=~/pear/ext -d php_dir=~/pear/lib \
      -d data_dir=~/pear/data -d test_dir=~/pear/tests \
      -d cache_dir=~/pear/cache -d bin_dir=~/pear/bin

  PEAR 1.4以上:

  $ pear config-create /home/user/pear .pearrc

  这样就在用户的home下建立了一个.pearrc文件

• 在.bashrc文件中加入
  PEAR 1.3.2 或以下:

  $ pear -c ~/.pearrc install Archive_Tar PEAR Console_Getopt XML_RPC

  PEAR 1.3.3以上

  $ pear install -o PEAR

  这样就在用户的home目录下新增了一个pear目录,这份pear是完全复制主机上的pear的.

• 为了使用刚装上的这份pear包,需要在php代码中指定include_path

  <?php
  ini_set('include_path', '~/pear/lib' . PATH_SEPARATOR
          . ini_get('include_path'));
  
  // From PHP 4.3.0 onward, you can use the following,
  // which especially useful on shared hosts:
  set_include_path('~/pear/lib' . PATH_SEPARATOR
                   . get_include_path());
  ?>

通过ftp/ftps/sftp安装pear

通过ftp之类的向远程虚拟主机上安装pear,这无疑是个好主意.主要通过pear的程序包PEAR_RemoteInstaller来完成这功能.有几点要确定:

• 本机是php 5.0以上
• 如果需要用ftps安装,那么本机的php需要增加openssl extension
• 如果需要用ssh安装,那么本机的php需要增加ssh2 extension
• php目录的pear命令行可执行
• ftp有写权限

因为时间关系,暂时不写具体步骤了,有需要的朋友可以参考下面的链接.

参考文档:

pear manual

pear install -o DB_Table

下载…………………………等了半晌,在下载完之后,本应安装成功的时候,丢出来一句:

No handlers for package.xml version 2.0

这实在是很奇怪的事情,php的xml extension没少装,依赖包也不曾短缺了它的,它怎么就能这样呢?搜索了一把,在Pear的Faq上面找到了答案.

Why do I get “No handlers for package.xml version 2.0″ when I try to install a package?

You are using a PEAR version lower than 1.4.0.

To install the package, you have to update PEAR via:

$ pear upgrade PEAR

This will install the latest available version of PEAR which is capable of installing packages that have only a package.xml version 2.0.

在升级Pear为1.4.11之后,问题解决.

特点

• 能一次处理多个文件的上传
• 容易校验文件的上传状态，限制不期望的文件上传
• 多语种的报错提示信息（还没有中文，不过可以扩展)

单个文件上传的例子

index.htm

<form action="./files.php" enctype="multipart/form-data">
File 1: <input type="file" name="userfile"><br>
<input type="submit" name="submit" value="Upload!">
</form>

files.php

<?php
require 'HTTP/Upload.php';
$upload = new HTTP_Upload('es');
// Language for error messages
$file = $upload->getFiles('userfile');
// return a file object or error
if (PEAR::isError($file)) {
	die ($file->getMessage());
}
// Check if the file is a valid upload
if ($file->isValid()) {    // this method will return the name of the file you moved,
	// useful for example to save the name in a database
	$file_name = $file->moveTo('./uploads_dir/');
	if (PEAR::isError($file_name)) {
		die ($file_name->getMessage());
	}
}
?>

多文件上传的例子

<form action="files.php" enctype="multipart/form-data">
Image 1: <input type="file" name="userfile[]">
<br>Image 2: <input type="file" name="userfile[]">
<br>Image 3: <input type="file" name="userfile[]">
<br><input type="submit" name="sub" value="Upload!"></form>

<?php
$files = $upload->getFiles(); // returns an array of file objects or error
foreach ($files as $file) {
   if ($file->isValid()) {
      ...
   }
}?>

下载

http://pear.php.net/package/HTTP_Upload

版权声明：可以任意转载，转载时请务必以超链接形式标明文章原始出处和作者信息及本声明

全自动安装

很简单，只用一行。

pear install <package>

<package>应当是你要安装的库名，可以到Pear的站上浏览，相当丰富。也可以用命令行直接查看：

pear remote-list

提示：使用”-o”参数能够自动安装必需的依赖应用库。

手动安装

如果你直接在pear站上下载了gzip的安装包，可以采用这种安装形式。pear会自动安装这个应用库，不再链接到网上去下载。

pear install <file>.tgz

命令清单

参考

• pear.php.net

版权声明：可以任意转载，转载时请务必以超链接形式标明文章原始出处和作者信息及本声明

DB_Table是什么？

DB_Table 是一个访问数据库Table的OO接口，它提供了一些自动创建、插入、更新和选择的方法。自动构建往往意味着要丧失一些灵活性，DB_Table也不能例外。

安装

pear的程序库的安装没什么悬念

pear install DB_Table

DB_Table上手

官方介绍上推荐不要直接使用DB_Table Class，而是对它进行扩展，在这之上再定义字段，索引，视图等等其它自定义内容。下面来看看如何对DB_Table扩展。

基本的例子：

<?php
class Guestbook extends DB_Table {
    // 稍后补充 We'll add more here later in the tutorial,
    // 注意，没有构造函数 but for now this is all we need.
}
?>

接着，实例化一个Guestbook

<?php
// 必须的class
require_once 'DB.php';
require_once 'DB/Table.php';
require_once 'Guestbook.php';

// create a PEAR DB object
$dsn = "phptype://username:password@localhost/database";
$db = DB::connect($dsn);

// set up for the Guestbook and create it, connecting
// to a table called 'guestbook' (which does not exist
// yet, we'll get to that in the next section)
$book =& new Guestbook($db, 'guestbook'); // note the "=&" (very important!)
?>

可以用PEAR_Error来查看是否有错

<?php
if ($book->error) {
    // error handling code goes here; for example ...

    print_r($book->error);

    // ... although that's probably a bad idea as it will print
    // your database username and password.
}
?>

下面看看如何详细定义Guestbook类,这个例子里定义了guestbook表的各个字段类型：

<?php
class Guestbook extends DB_Table {
    var $col = array(

        // unique row ID
        'id' => array(
            'type'    => 'integer',
            'require' => true
        ),

        // first name
        'fname' => array(
            'type'    => 'varchar',
            'size'    => 32
        ),

        // last name
        'lname' => array(
            'type'    => 'varchar',
            'size'    => 64
        ),

        // email address
        'email' => array(
            'type'    => 'varchar',
            'size'    => 128,
            'require' => true
        ),

        // date-time signed
        'signdate' => array(
            'type'    => 'date',
            'require' => true
        )
    );
?>

如果要进一步定义guestbook表的索引，可以这样进行：

<?php
class Guestbook extends DB_Table {

    // snip: var $col = array(...);  这部分内容和上面那段一样，省略

    var $idx = array(
        'id' => array(
            'type' => 'unique',
            'cols' => 'id'
        ),
        'signdate' => array(
            'type' => 'normal',
            'cols' => 'signdate'
        )
    );
}
?>

如果索引和字段名是一样的，而且不是多字段索引，上面的定义可以简化为：

<?php
    var $idx = array(
        // unique index called 'id' based on the 'id' column
        'id' => 'unique',

        // normal index called 'signdate' based on the 'signdate' column
        'signdate' => 'normal'
    );
?>

定义好表结构之后，我们看看如何进行查询，看上去非常简单，没有sql语句的痕迹：

<?php
// [snip] create the $book Guestbook object

// get the 'list' view as an array
$rows = $book->select('list');
print_r($rows);

// get the 'emails' view as a DB_Result object
$result = $book->selectResult('emails');
print_r($result);

?>

按条件查询：

<?php

// [snip] create the $book Guestbook object

// get 'list' view rows signed on August 14, 2003, ordered ascending by
// last name and first name, starting at row 7 and getting 12 rows total.

$view = 'list';
$filter = "signdate = '2003-08-14'";
$order = 'lname, fname';
$start = 7;
$count = 12;

// as an array
$rows = $book->select($view, $filter, $order, $start, $count);
print_r($rows);

// as a DB_Result object
$rows = $book->selectResult($view, $filter, $order, $start, $count);
print_r($result);

?>

数据插入

<?php

// [snip] create the Guestbook object ($book)

// assign the fields and values
$cols_vals = array(
    'id'       => 1,
    'fname'    => 'Thomas',
    'lname'    => 'Anderson',
    'signdate' => '2003-10-12',
    'email'    => 'neo@matrix.net'
);

// insert into the table and print results
$result = $book->insert($cols_vals);
print_r($result);

?>

数据更新

<?php

// [snip] create the Guestbook object ($book)

// assign the updated fields and values
$cols_vals = array(
    'lname' => 'Jones'
);

// assign the WHERE clause
$where = "lname = 'Smith'";

// attempt the update and print the results
$result = $book->update($cols_vals, $where);
print_r($result);

?>

数据删除

<?php

// [snip] create the Guestbook object ($book)

// a where clause
$today = date('Y-m-d'); // formatted as yyyy-mm-dd
$where = "signdate < '$today'";

// attempt the delete and print the results
$result = $book->delete($where);
print_r($result);

?>

在上面的例子中已经没有太多sql语句的痕迹了，这可以在一定程度上简化开发过程中sql语句的编写，但是还是那句话，自动化的同时降低了灵活性，在使用DB_Table之前需要权衡。

参考

http://wiki.ciaweb.net/yawiki/index.php?area=DB_Table&page=HomePage

下载源码

http://pear.php.net/package/DB_Table

• filter
• json
• zip

其中filter extension由Rasmus Lerdorf提供，帮助php开发者过滤用户提交的内容。原来是在pecl.php.net，更详细的内容可以看这里：http://oss.backendmedia.com/PeclFilter，如能广泛使用，目前php开发的安全性将提升一个台阶！之前还听说对pdo extension有些调整，比如新增了setFetchMode方法，经常使用Pear:DB的同学一定不会陌生。

Given that it took a few months to reach this point and addition of new features was allowed the changelog already looks extremely impressive. Some of the key changes include things like 3 new extensions (filter, json and zip), the date extension had the rest of its functionality enabled, much work was done in terms of getting PHP 5.2 to run faster and more efficiently (in terms on memory usage). There have also been nearly 80 bug fixes made to existing functionality, which hopefully translates to a more stable release.

下载

• bz包
• gzip包

require_once "HTTP/Request.php";

$req =& new HTTP_Request("http://upload.example.com/upload.php");
$req->setBasicAuth("johndoe", "foo");
$req->setMethod(HTTP_REQUEST_METHOD_POST);

$result = $req->addFile("foo.jpg", "/home/foo/foo.jpg");
if (PEAR::isError($result)) {
    echo $result->getMessage();
} else {

    $response = $req->sendRequest();

    if (PEAR::isError($response)) {
        echo $response->getMessage();
    } else {
        echo $req->getResponseBody();
    }
}

我们不必从头进行这些工作,pear已经提供了一些可用的类库,到命令行下面利用pear安装这些包
pear install channel://pear.php.net/XML_RSS-0.9.9
pear install channel://pear.php.net/HTML_AJAX-0.4.0

下面是一个简单的测试代码:

< ?php
require_once 'XML/RSS.php';
require 'HTML/AJAX/JSON.PHP';

$rss = new XML_RSS('http://www.ooso.net/index.php/feed/');
$rss->parse();
//var_dump($rss->getItems());

$json = new HTML_AJAX_JSON();
$js = $json->encode($rss->getItems());

echo $js;
?>

• 什么是json?
• 相关文章

代码分为以下部分:

demo.php – 上传过程处理

< ?php

include 'UploadProgressMeter.class.php';

$fileWidget = new UploadProgressMeter();

if ($fileWidget->uploadComplete()) {
        // 上传完毕的时候,从iframe发送一个js到主窗口表示一切ok
        echo $fileWidget->finalStatus();

        // 处理上传后的文件...

        exit;
}
?>

demoserver.php – ajax的服务端js,使用Pear:HTML_AJAX,直接调用UploadProgressMeterStatus类
[html]

< ?php echo $fileWidget->renderIncludeJs(); ?>[/html]

进度条的样式表
[css].progressBar {
position: relative;
padding: 2px;
width: 300px;
height: 40px;
font-size: 14px;
}
.progressBar .background {
border: solid 1px black;
width: 270px;
height: 20px;
}
.progressBar .bar {
position: relative;
background-color: blue;
width: 0px;
height: 20px;
}[/css]

表单部分
[html]

[/html]

demo下载 – 密码是www.ooso.net
作者的svn浏览

其它类似项目:
http://pdoru.from.ro/ – 要以patch的形式和php一起编译
http://www.ugia.cn/?p=54 – 以socket上传文件并显示进度条

/**
* 生成缩略图
*
* @param string $src 源图片路径
* @param string $dst 目标图片路径
* @param int $width 缩略图宽
* @param int $height 缩略图高
* @return bool
*/
function cropImg($src, $dst, $width, $height) {
 //Pear::Image_Transform
 include_once('Image/Transform.php');
 $img = Image_Transform::factory('GD');
 $img->load($src);

 $size = $img->getImageSize();
 if(empty($size[0]))
  return false;
 if($size[0] / $size[1] > $width / $height) {
  $w = round($size[0] * $height / $size[1]);
  $h = $height;
  $over = 'width';
 } else {
  $w = $width;
  $h = round($size[1] * $width / $size[0]);
  $over = 'height';
 }
 $img->resize($w, $h);
 $img->save($dst, 'jpeg', 100);
 $img->free();

 $img->load($dst);
 $size = $img->getImageSize();
 if($over == 'width') {
  $x = round(($size[0] - $width) / 2);
  $y = 0;
 } else {
  $x = 0;
  $y = round(($size[1] - $height) / 2);
 }
 $img->crop($width, $height, $x, $y);
 //die($img->display());
 $img->save($dst, 'jpeg');
 $img->free();

 return true;
}

这里有个相似的例子:
http://www.phpx.com/happy/thread-111786-1-3.html

shell> pear channel-discover http://pear.mooexpress.com
shell> pear config-set preferred_state beta
shell> pear upgrade mooexpress/prado
upgrade ok: channel://pear.mooexpress.com/prado-2.1

• 首先用discover频道搜索: pear channel-discover http://pear.mooexpress.com
• 接着修改config允许安装beta版的pear包: pear config-set preferred_state beta
• 最后安装或升级指定的包: pear install mooexpress/prado

channel参数是pear命令行最近的新增参数,估计主要为第三方的兼容pear的lib而设定.

http://www.foo.com/index.php/p/user:photo
http://www.foo.com/index.php/p/user:photo/page/1
http://www.foo.com/index.php/p/user:photo/page/2

正常的页面url:

http://www.foo.com/index.php?p=user:photo
http://www.foo.com/index.php?p=user:photo&page=1
http://www.foo.com/index.php?p=user:photo&page=2

之前使用的分页类是Pear:Pager,在这时候就玩不转了,不管如何调整参数分页链接总是错误,于是写了个Pathing.php,专门用于path方式的分页,调用方法:

$pager = Pager::factory(array('mode' => 'Pathing'));

Pager/Pathing.php

require_once('Pager/Jumping.php');

class Pager_Pathing extends Pager_Jumping {

    /**
     * @see Pager_Common::_setOptions()
     */
    function _setOptions($options) {
        $allowed_options = array(
            'totalItems',
            'perPage',
            'delta',
            'linkClass',
            'path',
            'fileName',
            'append',
            'httpMethod',
            'importQuery',
            'urlVar',
            'altPrev',
            'altNext',
            'altPage',
            'prevImg',
            'nextImg',
            'expanded',
            'separator',
            'spacesBeforeSeparator',
            'spacesAfterSeparator',
            'curPageLinkClassName',
            'curPageSpanPre',
            'curPageSpanPost',
            'firstPagePre',
            'firstPageText',
            'firstPagePost',
            'lastPagePre',
            'lastPageText',
            'lastPagePost',
            'firstLinkTitle',
            'nextLinkTitle',
            'prevLinkTitle',
            'lastLinkTitle',
            'showAllText',
            'itemData',
            'clearIfVoid',
            'useSessions',
            'closeSession',
            'sessionVar',
            'pearErrorMode',
            'extraVars',
            'excludeVars',
            'currentPage',
        );

        foreach ($options as $key => $value) {
            if (in_array($key, $allowed_options) && (!is_null($value))) {
                $this->{'_' . $key} = $value;
            }
        }

        $this->_fileName = ltrim($this->_fileName, '/');  //strip leading slash
        $this->_path     = rtrim($this->_path, '/');      //strip trailing slash

        if ($this->_append) {
            $this->_fileName = CURRENT_FILENAME; //avoid possible user error;
            $this->_url = $this->_path.'/'.$this->_fileName;
        } else { //hacked for pathing pager
   $this->_url = $this->_path;
            if (strncasecmp($this->_fileName, 'javascript', 10) != 0)
                $this->_url .= '/';

   $len = strlen($this->_urlVar);
   if((substr($this->_path, -$len, $len) == $this->_urlVar) and
    is_numeric(CURRENT_FILENAME))
    $this->_url = substr($this->_path, 0, -$len);
   else
    $this->_url.= CURRENT_FILENAME . '/';

            if (!strstr($this->_fileName, '%d'))
                trigger_error($this->errorMessage(ERROR_PAGER_INVALID_USAGE), E_USER_WARNING);
        }

        $this->_classString = '';
        if (strlen($this->_linkClass)) {
            $this->_classString = 'class="'.$this->_linkClass.'"';
        }

        if (strlen($this->_curPageLinkClassName)) {
            $this->_curPageSpanPre  = '<span class="'.$this->_curPageLinkClassName.'">';
            $this->_curPageSpanPost = '</span>';
        }

        $this->_perPage = max($this->_perPage, 1); //avoid possible user errors

        if ($this->_useSessions && !isset($_SESSION)) {
            session_start();
        }
        if (!empty($_REQUEST[$this->_sessionVar])) {
            $this->_perPage = max(1, (int)$_REQUEST[$this->_sessionVar]);
            if ($this->_useSessions) {
                $_SESSION[$this->_sessionVar] = $this->_perPage;
            }
        }

        if (!empty($_SESSION[$this->_sessionVar])) {
             $this->_perPage = $_SESSION[$this->_sessionVar];
        }

        if ($this->_closeSession) {
            session_write_close();
        }

        $this->_spacesBefore = str_repeat(' ', $this->_spacesBeforeSeparator);
        $this->_spacesAfter  = str_repeat(' ', $this->_spacesAfterSeparator);

        $request = ($this->_httpMethod == 'POST') ? $_POST : $_GET;
        if (isset($request[$this->_urlVar]) && empty($options['currentPage'])) {
            $this->_currentPage = (int)$request[$this->_urlVar];
        }
        $this->_currentPage = max($this->_currentPage, 1);
        $this->_linkData = $this->_getLinksData();

  return PAGER_OK;
 }

}

调用例子:

require 'Pager/Pager.php';
	$opt = array(
		'mode' 			=> 'Pathing',
		'totalItems'	=> $totalItems,
		'perPage'		=> $perPage,
		'append'		=> false,
		'fileName'		=> 'page/%d',
		'urlVar'		=> 'page',
	);

	$pager = Pager::factory($opt);
	$links = $pager->getLinks();

下载地址：

http://www.smartphp.net/content/app/download.php

使用注意事项:

为了在同一个脚本中使用多个模板可以这样修改(php4):

281 line

unset($_top);

to

unset($GLOBALS['_top']);

代码片段:

在editplus的工具配置中调用以上批处理文件，参数为$(FilePath),一切搞定，可以用phpCodeBeautifier自动打开editplus当前编辑的文件:P

< ?php foreach ($book as $key => $val): ?>
    <tr>
       <td>< ?php echo $val[‘author’] ?></td>
       <td>< ?php echo $val[‘title’] ?></td>
    </tr>
< ?php endforeach; ?>

我觉得用这种方式处理比较灵活,也还方便,而且并不需要生成cache之类的把戏,因为它本身已经是php程序了.加上方便的plugin和filter扩展,值得考虑,下面是这个模板的详细信息:

http://pear.php.net/pepr/pepr-proposal-show.php?id=83

首先俺细细的阅读了官方站点上介绍php5的有关章节,以及网络上的一些关于php5的文章.基本开发环境定为linux+apache2+php5+mysql4.1,很经典的搭配.为了提高开发效率,俺决定继续使用pear的类库和prado,因此现状是php4,php5的代码将并存.第一周俺们就遇到了麻烦:

1.mysqli和zend1的兼容性
php.ini里面有一个选项,可以开启对zend1的兼容性,如果你在打开这个开关的同时还想使用mysqli的话,很快就会失望.它会无情的告诉你:
unable clone a uncloneable object…………………

2.使用prado和php5的一些问题
prado程序包prado.php的有段代码如下:
set_error_handler( …….. );
php5的配置默认是不提示E_STRICT级别的错误,要命的是,这行代码对任何错误都会die(………………..),pear的代码完全没办法工作,只好咔嚓之

http://club.phpe.net/index.php?act=ST&f=2&t=3701

在此基础上俺进行了修改,适合自己使用：

pcb.bat

代码片段: <font color="#000000"> set phpcb_path="F:Program FilesphpCB"<br />%phpcb_path%phpCB.exe -space-after-if -space-after-switch -space-after-while -space-before-start-angle-bracket -space-after-end-angle-bracket -glue-amperscore -change-shell-comment-to-double-slashes-comment -force-large-php-code-tag -force-true-false-null-contant-lowercase --comment-rendering-style PEAR -align-equal-statements-to-fixed-pos -indent-with-tab -optimize-eol -align-equal-statements --padding-char-count 1 %1 > %TEMP%phpcbTemp.php<br />move /Y %TEMP%phpcbTemp.php %1</font>

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