php去除重复字符

方法一

//假定以“;”为每组词的分割符 

03 $text = 'a->b;b->a;c->a;a->c'; 

04 $arr = explode(";", $text); 

05 $arrSorted = array(); 

06 foreach($arr as $str) { 

07     list($front, $back) = explode("->", $str); 

08     //将唯一的字符串保存在$arrSorted的键值里 

09     if (!isset($arrSorted[$front.$back]) and !isset($arrSorted[$back.$front])) { 

10         $arrSorted[$front.$back] = $front.'->'.$back;    

11     } 

12 } 

13 //打印 

14 foreach($arrSorted as $str) { 

15     echo $str . '<br/>'; 

16 }

方法二

$reg1 = 'a->b';
$content; //这里是你所有的内容
preg_match_all($reg1, $content, $match); //这里得到的是所有的'a->b'的内容存为数组
preg_replace($reg1, '', $match);

 

class HttpRequest
{
var $sHostAdd;
var $sUri;
var $iPort;

var $sRequestHeader;

var $sResponse;

function HttpRequest($sUrl){
$sPatternUrlPart = '/http://([a-z-.0-9]+)(:(d+)){0,1}(.*)/i';
$arMatchUrlPart = array();
preg_match($sPatternUrlPart, $sUrl, $arMatchUrlPart);

$this->sHostAdd = gethostbyname($arMatchUrlPart[1]);
if (empty($arMatchUrlPart[4])){
$this->sUri = '/';
}else{
$this->sUri = $arMatchUrlPart[4];
}
if (empty($arMatchUrlPart[3])){
$this->iPort = 80;
}else{
$this->iPort = $arMatchUrlPart[3];
}

$this->addRequestHeader('Host: '.$arMatchUrlPart[1]);
$this->addRequestHeader('Connection: Close');
}

function addRequestHeader($sHeader){
$this->sRequestHeader .= trim($sHeader)." ";
}

function sendRequest($sMethod = 'GET', $sPostData = ''){
$sRequest = $sMethod." ".$this->sUri." HTTP/1.1 ";
$sRequest .= $this->sRequestHeader;
if ($sMethod == 'POST'){
$sRequest .= "Content-Type: application/x-www-form-urlencoded ";
$sRequest .= "Content-Length: ".strlen($sPostData)." ";
$sRequest .= " ";
$sRequest .= $sPostData." ";
}
$sRequest .= " ";

$sockHttp = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if (!$sockHttp){
die('socket_create() failed!');
}

$resSockHttp = socket_connect($sockHttp, $this->sHostAdd, $this->iPort);
if (!$resSockHttp){
die('socket_connect() failed!');
}

socket_write($sockHttp, $sRequest, strlen($sRequest));

$this->sResponse = '';
while ($sRead = socket_read($sockHttp, 4096)){
$this->sResponse .= $sRead;
}

socket_close($sockHttp);
}

function getResponse(){
return $this->sResponse;
}

function getResponseBody(){
$sPatternSeperate = '/ /';
$arMatchResponsePart = preg_split($sPatternSeperate, $this->sResponse, 2);
return $arMatchResponsePart[1];
}

function getResponseHead(){
$sPatternSeperate = '/ /';
$arMatchResponsePart = preg_split($sPatternSeperate, $this->sResponse, 2);
return $arMatchResponsePart[0];
}
}

unction explode_content($content, $length) { 

02 $i = 0; 

03 $k = 1; 

04 $j = 0; 

05 $wn = 0; 

06 $s = ''; 

07 $e = 1; 

08 $yh = 0; 

09 while ($k) { 

10 $d = $content[$i]; 

11 if ($d !== '') { 

12 if (ord($d) > 127) { 

13 $j++; 

14 $num = 2; 

15 $i++; 

16 } else { 

17 $num = 1; 

18 } 

19 $j++; 

20 } else { 

21 if ($s) { 

22 $listdb[] = addslashes($s); 

23 } 

24 $k = 0; 

25 } 

26 $v1 = $j - $num; 

27 $w = substr($content, $v1, $num); 

28 if ($w !== '') { 

29   

30 if ($w == '<') { 

31 $e = 0; 

32 } 

33 if (!$e && $w == '"') { 

34 $yh++; 

35 } 

36 if ($e && $w != ' ' && $w != '　') { 

37 $wn++; 

38 } 

39 if ($w == '>' && $yh % 2 == 0) { 

40 $e = 1; 

41 } 

42 $s .= $w; 

43 } 

44 if ($wn >= $length && $e) { 

45 $listdb[] = addslashes($s); 

46 $s = ''; 

47 $wn = 0; 

48 } 

49 $i++; 

50 } 

51 return $listdb; 

52 } 

53   

54   

55   

56 分页使用 

57 $page_per = 500; //每页字数 
php文章内容分页
58 $article_list = explode_content($article, $page_per); //拆分文章 

59 $page_count = count($article_list); 

60 $page = !empty($_GET['page']) ? intval($_GET['page']) : 1; 

61 $page = ($page > $page_count && $page_count>0) ? $page_count : $page; 

62 $article = strips教程lashes($article_list[$page -1]); 

63 if ($page_count>1) { 

64 if ($page == 1) { 

65 $page_code = "<a href="news.php?id=$id&page=".($page+1)."">下页</a> <a href="news.php?id=$id&page=$page_count">末页</a> "; 

66 } 

67 elseif ($page == $page_count) { 

68 $page_code = "<a href="news.php?id=$id&page=".($page-1)."">上页</a> <a href="news.php?id=$id&page=1">首页</a> "; 

69 } else { 

70 $page_code = "<a href="news.php?id=$id&page=".($page+1)."">下页</a> <a href="news.php?id=$id&page=".($page-1)."">上页</a> "; 

71 } 

72 }

标签是给Smarty的指令符，以模板定界符包住。这些指令符可以是变量，以$符号代表函数、逻辑 或 流程控制 语法。Smarty 允许 PHP 程式设计师以Smarty 标签去定义可存取的函数

smarty 模板if else使用实例与入门教程
smarty 主要功能是完成美工与程序分离，并且使用的缓存技术，减轻服务器的负载，
smarty 以在文件中放置特殊的“Smarty标签”来产生网页内容。这些标签会被处理并替换成其他的内容。

 

*/

require('smarty/libs/Smarty.class.php教程');

$tpl = new Smarty();
$tpl->template_dir   = 'd/'
$tpl->compile_dir    = 'd/template_c';

$tpl->compile_check   = false;//$cfg['debug'];
$tpl->debugging      = false;
$tpl->caching       = false;
$tpl->cache_lifetime  = 3600;

$tpl->left_delimiter  = '<!--{';
$tpl->right_delimiter  = '}-->';

$array = 'www.111cn.net'
$tpl->assign('dataList', $array);
$tpl->display('a.tpl');

/*
a.tpl
<!--{if $dataList =='www.111cn.net'}-->
 <!--{$dataList}-->
<!--{else}-->
 echo 'aaa';
<!--{/if}-->

还有另一种方法

{if $name eq 'Fred'}
    Welcome Sir.
{elseif $name eq 'Wilma'}
    Welcome Ma'am.
{else}
    Welcome, whatever you are.
{/if}

{* an example with "or" logic *}
{if $name eq 'Fred' or $name eq 'Wilma'}
   ...
{/if}

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