Publish: January 25, 2012
Category: PHP
425 Comments
对二维数组排序,得用到array_multisort() 下面是从php手册摘出来的例子.具体请根据你的问题查阅手册. ========= 数据全都存放在名为 data 的数组中。这通常是通过循环从数据库取得的结果，例如 mysql_fetch_assoc()。
<?php
$data[] = array('volume' => 67, 'edition' => 2);
$data[] = array('volume' => 86, 'edition' => 1);
$data[] = array('volume' => 85, 'edition' => 6);
$data[] = array('volume' => 98, 'edition' => 2);
$data[] = array('volume' => 86, 'edition' => 6);
$data[] = array('volume' => 67, 'edition' => 7);
?>
本例中将把 volume 降序排列，把 edition 升序排列。
现在有了包含有行的数组，但是 array_multisort() 需要一个包含列的数组，因此用以下代码来取得列，然后排序。
<?php
// 取得列的列表
foreach ($data as $key => $row) {
$volume[$key] = $row['volume'];
$edition[$key] = $row['edition'];
}
// 将数据根据 volume 降序排列，根据 edition 升序排列
// 把 $data 作为最后一个参数，以通用键排序
array_multisort($volume, SORT_DESC, $edition, SORT_ASC, $data);
?>
数据集合现在排好序了，结果如下：
volume | edition
-------+--------
98 | 2
86 | 1
86 | 6
85 | 6
67 | 2
67 | 7
Publish: January 24, 2012
Category: PHP,正则表达式
1698 Comments
$url = $_POST["url"];
$contents_old = file_get_contents($url);
preg_match("/\d{3}\d+/", $url , $buyid);
preg_match("|<h1>(.*)</h1>|U", $contents_old, $jobname);
preg_match("|<img onerror(.*)>|U", $contents_old, $jobpic);
preg_match("|src=\"(.*)\"|U", $jobpic[0], $pic);
preg_match("|京东价：￥(.*)。|U", $contents_old, $price);
preg_match_all("|<li[^>]>(.*)</li>|U", $contents_old, $extra);
preg_match_all("|<h2>(.*)</h2>|U", $contents_old, $contitle);
preg_match_all("|<div class=\"con\">([\s\S]*)</div>|U", $contents_old, $conarray);
$title = trim(strip_tags($jobname[1]));
$ex = "";
foreach($extra[0] as $exone){
if(strpos($exone,"<a") == 0){
$ex .= $exone;
}
}
$constr ="";
foreach($conarray[1] as $id=>$conone){
$constr .= $contitle[0][$id].$conone;
}
$content = $constr;
$exdata = array(
'title' => $title,
'price' => $price[1],
'picurl' => $pic[1],
'creattime' => time(),
'buyid' => $buyid[0],
'content' => mysql_real_escape_string($content)
);
Publish: January 24, 2012
Category: JQUERY
6 Comments
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