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Yii + Zend_Feed

Submitted by gouki on 2011, August 17, 12:44 AM

YII是一个PHP框架。
ZendFramework也是一个PHP框架
在Yii里配置ZF框架，刷刷的就一个RSS阅读器就出来了。
代码很简单，把Zend整合COPY到protected/extensions目录下
在控制器的init方法里加入:
Yii::import("ext.*");
require_once("Zend_Feed_Reader.php");

然后在需要的方法里加入
$feed = Zend_Feed_Reader::import("http://neatstudio.com/rss.php");
这样就创建了一个读的对象了。然后。。。。。
你懂的：

PHP代码

$data = array(
'title' => $feed->getTitle(),
'link' => $feed->getLink(),
'dateModified' => $feed->getDateModified(),
'description' => $feed->getDescription(),
'language' => $feed->getLanguage(),
'entries' => array(),
);
foreach ($feed as $entry) {
$edata = array(
'title' => $entry->getTitle(),
'description' => $entry->getDescription(),
'dateModified' => $entry->getDateModified(),
'authors' => $entry->getAuthors(),
'link' => $entry->getLink(),
'content' => $entry->getContent()
);
$data['entries'][] = $edata;
}
print_r($data);

就这样，一个刚刚的RSS阅读器就出来了。
当然，它没有缓存，没有这没有那的，不过，都解析完了，剩下的功能还会远吗？

Tags: yii, zend

PHP | 评论:0 | 阅读:18832

HTML中尺寸对比

Submitted by gouki on 2011, August 13, 12:32 AM

做网页的时候，总是会用到一些尺寸，那么这些尺寸的规格又各是什么呢？这里有个表格可以做个简单的对比，可以让你在看到这些尺寸的时候能够知道如何进行换算成自己所熟悉的尺寸单位：

Points	Pixels	Ems	Percent
6pt	8px	0.5em	50%
7pt	9px	0.55em	55%
7.5pt	10px	0.625em	62.5%
8pt	11px	0.7em	70%
9pt	12px	0.75em	75%
10pt	13px	0.8em	80%
10.5pt	14px	0.875em	87.5%
11pt	15px	0.95em	95%
12pt	16px	1em	100%
13pt	17px	1.05em	105%
13.5pt	18px	1.125em	112.5%
14pt	19px	1.2em	120%
14.5pt	20px	1.25em	125%
15pt	21px	1.3em	130%
16pt	22px	1.4em	140%
17pt	23px	1.45em	145%
18pt	24px	1.5em	150%
20pt	26px	1.6em	160%
22pt	29px	1.8em	180%
24pt	32px	2em	200%
26pt	35px	2.2em	220%
27pt	36px	2.25em	225%
28pt	37px	2.3em	230%
29pt	38px	2.35em	235%
30pt	40px	2.45em	245%
32pt	42px	2.55em	255%
34pt	45px	2.75em	275%
36pt	48px	3em	300%

其实本来已经发表了，但不知怎么的，文章消失了。郁闷，只好重发一遍，其实也是给自己做个参考了。

PHP | 评论:0 | 阅读:13257

扩展yii的验证类

Submitted by gouki on 2011, August 8, 10:20 PM

在项目中遇到文件上传的问题，这时候需要用到CFileValidator，但是官方的验证中少了一点点的处理，比如，对于图片，我只想上传尺寸正好是300x500的图片。怎么办？
所以我做了一点小小的扩展，于是我在rules里面加了这么两条：

PHP代码

array('picname', 'application.validators.Myfile', 'on'=>'insert','types'=>'jpg,png','wrongType'=>'只允许上传jpg或者PNG','maxSize' => 1024*300,'tooLarge' => '图片最大只支持300K','imageSize'=>'768x1024','wrongImageSize'=>'对不起，图片尺寸只支持768*1024'),
array('picname', 'application.validators.Myfile', 'on'=>'update','types'=>'jpg,png','wrongType'=>'只允许上传jpg或者PNG','maxSize' => 1024*300,'tooLarge' => '图片最大只支持300K','imageSize'=>'768x1024','wrongImageSize'=>'对不起，图片尺寸只支持768*1024','allowEmpty'=>true,),

数组的第二个字段就是一个全路径，告诉rules，对于picname用的是application.validators.Myfile类。这个类其实很简单，只是简单的扩展了官方的CFileValidator类，大致如下：

PHP代码

class Myfile extends CFileValidator{
public $imageSize;
public $wrongImageSize;
/**
* @param CModel $object the object being validated
* @param string $attribute the attribute being validated
* @param CUploadedFile $file uploaded file passed to check against a set of rules
* @return void
*/
protected function validateFile($object, $attribute, $file){
parent::validateFile($object,$attribute,$file);
if($this->imageSize!=''&&strpos($this->imageSize,"x")!==false){
list($width,$height) = @getimagesize($file->getTempName());
$imageSize = sprintf("%sx%s",$width,$height);
if($imageSize != $this->imageSize){
$message=$this->wrongImageSize!==null?$this->wrongImageSize : Yii::t('yii','The file "{file}" cannot be uploaded. Only files with these size are allowed: {imagesize}.');
$this->addError($object,$attribute,$message,array('{file}'=>$file->getName(), '{extensions}'=>$this->imageSize));
}
}
}
}

我这种只是简单的判断是否与指定尺寸相符，如果需要检测小于指定范围的图片，那就需要多一点的判断了，也不会太难啦。主要是一个思路（感谢烂桔提供思路）

Tags: yii

PHP | 评论:0 | 阅读:17015

xml2array 和 array2xml

Submitted by gouki on 2011, August 7, 10:43 PM

这是一个简单的方法，其实是两种方法的其中一种：xml2array 和 array2xml 中的一种啦。
但因为array2xml的时候，没有办法做到更好的把attributes做到更好，因此，就折腾了一些简单的处理方法：
array2xml是hightman的方法的简版。我自己改了一些：

PHP代码

function array2xml($var, $type = 'root', $tag = '') {
$ret = '';
if (!is_int($type)) {
if ($tag)
return array2xml(array($tag => $var), 0, $type); else {
$tag .= $type;
$type = 0;
}
}
$level = $type;
$indent = str_repeat("\t", $level);
if (!is_array($var)) {
$ret .= $indent . '<' . $tag;
$var = strval($var);
if ($var == '') {
$ret .= ' />';
} else if (!preg_match('/[^0-9a-zA-Z@\._:\/-]/', $var)) {
$ret .= '>' . $var . '</' . $tag . '>';
} else {
$ret .= "><![CDATA[{$var}]]></{$tag}>";
}
// if (strpos($var, "\n") === false){
// $ret .= '><![CDATA[' . $var . ']]></' . $tag . '>';
// } else
$ret .= "\n";
} else if (!(is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) && !emptyempty($var)) {
foreach ($var as $tmp)
$ret .= array2xml($tmp, $level, $tag);
} else {
$ret .= $indent . '<' . $tag;
if ($level == 0)
$ret .= '';
if (isset($var['@attributes'])) {
foreach ($var['@attributes'] as $k => $v) {
if (!is_array($v)) {
$ret .= sprintf(' %s="%s"', $k, $v);
}
}
unset($var['@attributes']);
}
$ret .= ">\n";
foreach ($var as $key => $val) {
$ret .= array2xml($val, $level + 1, $key);
}
$ret .= "{$indent}</{$tag}>\n";
}
return $ret;

在其中强加了attributes。比较恶心的方法啦。。
然后xml2array，其实以前写过，但写的不太好，所以我这次抄的是ibm的网站上的xml2json中的代码：

PHP代码

define ("DEBUG", false);
// Maximum Recursion Depth that we can allow.
define ("MAX_RECURSION_DEPTH_ALLOWED", 25);
// An empty string
define ("EMPTY_STR", "");
// SimpleXMLElement object property name for attributes
define ("SIMPLE_XML_ELEMENT_OBJECT_PROPERTY_FOR_ATTRIBUTES", "@attributes");
// SimpleXMLElement object name.
define ("SIMPLE_XML_ELEMENT_PHP_CLASS", "SimpleXMLElement");
/**
* @static
* @param $simpleXmlElementObject
* @param int $recursionDepth
* @return array|null|string
*/
public static function xml2array($simpleXmlElementObject, $getAttributes = false , &$recursionDepth = 0 ) {
// Keep an eye on how deeply we are involved in recursion.
if ($recursionDepth > MAX_RECURSION_DEPTH_ALLOWED) {
// Fatal error. Exit now.
return (null);
}
if ($recursionDepth == 0) {
if (get_class($simpleXmlElementObject) != SIMPLE_XML_ELEMENT_PHP_CLASS) {
// If the external caller doesn't call this function initially
// with a SimpleXMLElement object, return now.
return (null);
} else {
// Store the original SimpleXmlElementObject sent by the caller.
// We will need it at the very end when we return from here for good.
$callerProvidedSimpleXmlElementObject = $simpleXmlElementObject;
}
} // End of if ($recursionDepth == 0) {
if (get_class($simpleXmlElementObject) == SIMPLE_XML_ELEMENT_PHP_CLASS) {
// Get a copy of the simpleXmlElementObject
$copyOfsimpleXmlElementObject = $simpleXmlElementObject;
// Get the object variables in the SimpleXmlElement object for us to iterate.
$simpleXmlElementObject = get_object_vars($simpleXmlElementObject);
}
// It needs to be an array of object variables.
if (is_array($simpleXmlElementObject)) {
// Initialize the result array.
$resultArray = array();
// Is the input array size 0? Then, we reached the rare CDATA text if any.
if (count($simpleXmlElementObject) <= 0) {
// Let us return the lonely CDATA. It could even be
// an empty element or just filled with whitespaces.
return (trim(strval($copyOfsimpleXmlElementObject)));
}
// Let us walk through the child elements now.
foreach ($simpleXmlElementObject as $key => $value) {
// When this block of code is commented, XML attributes will be
// added to the result array.
// Uncomment the following block of code if XML attributes are
// NOT required to be returned as part of the result array.
/*
if((is_string($key)) && ($key == SIMPLE_XML_ELEMENT_OBJECT_PROPERTY_FOR_ATTRIBUTES)) {
continue;
}
*/
// Let us recursively process the current element we just visited.
// Increase the recursion depth by one.
$recursionDepth++;
if($key == '@attributes' && $getAttributes == true){
foreach(self::xml2array($value,$getAttributes, $recursionDepth) as $k=>$v){
$resultArray[$k]=$v;
}
}else{
$resultArray[$key] = self::xml2array($value,$getAttributes, $recursionDepth);
}
// Decrease the recursion depth by one.
$recursionDepth--;
} // End of foreach($simpleXmlElementObject as $key=>$value) {
if ($recursionDepth == 0) {
// That is it. We are heading to the exit now.
// Set the XML root element name as the root [top-level] key of
// the associative array that we are going to return to the caller of this
// recursive function.
$tempArray = $resultArray;
$resultArray = array();
$resultArray[$callerProvidedSimpleXmlElementObject->getName()] = $tempArray;
}
return ($resultArray);
} else {
// We are now looking at either the XML attribute text or
// the text between the XML tags.
return (trim(strval($simpleXmlElementObject)));
} // End of else
}