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代码如下:

<?php
header("Content-type: text/html; charset=utf-8");
function getWebDiv($div_id,$url=false,$data=false){
if($url !== false){
$data = file_get_contents( $url );
}
$charset_pos = stripos($data,'charset');
if($charset_pos) {
if(stripos($data,'utf-8',$charset_pos)) {
$data = iconv('utf-8','utf-8',$data);
}else if(stripos($data,'gb2312',$charset_pos)) {
$data = iconv('gb2312','utf-8',$data);
}else if(stripos($data,'gbk',$charset_pos)) {
$data = iconv('gbk','utf-8',$data);
}
}
preg_match_all('/<div/i',$data,$pre_matches,PREG_OFFSET_CAPTURE); //获取所有div前缀
preg_match_all('/<\/div/i',$data,$suf_matches,PREG_OFFSET_CAPTURE); //获取所有div后缀
$hit = strpos($data,$div_id);
if($hit == -1) return false; //未命中
$divs = array(); //合并所有div
foreach($pre_matches[0] as $index=>$pre_div){
$divs[(int)$pre_div[1]] = 'p';
$divs[(int)$suf_matches[0][$index][1]] = 's';
}
//对div进行排序
$sort = array_keys($divs);
asort($sort);
$count = count($pre_matches[0]);
foreach($pre_matches[0] as $index=>$pre_div){
//<div $hit <div+1 时div被命中
if(($pre_matches[0][$index][1] < $hit) && ($hit < $pre_matches[0][$index+1][1])){
$deeper = 0;
//弹出被命中div前的div
while(array_shift($sort) != $pre_matches[0][$index][1] && ($count--)) continue;
//对剩余div进行匹配，若下一个为前缀，则向下一层，$deeper加1，
//否则后退一层，$deeper减1，$deeper为0则命中匹配，计算div长度
foreach($sort as $key){
if($divs[$key] == 'p') $deeper++;
else if($deeper == 0) {
$length = $key-$pre_matches[0][$index][1];
break;
}else {
$deeper--;
}
}
$hitDivString = substr($data,$pre_matches[0][$index][1],$length).'</div>';
break;
}
}
return $hitDivString;
}
echo getWebDiv('id="taglist"','http://www./tag/');
//End_php

代码如下:

View Code
<?php
header("Content-type: text/html; charset=utf-8");
function getWebTag($tag_id,$url=false,$tag='div',$data=false){
if($url !== false){
$data = file_get_contents( $url );
}
$charset_pos = stripos($data,'charset');
if($charset_pos) {
if(stripos($data,'utf-8',$charset_pos)) {
$data = iconv('utf-8','utf-8',$data);
}else if(stripos($data,'gb2312',$charset_pos)) {
$data = iconv('gb2312','utf-8',$data);
}else if(stripos($data,'gbk',$charset_pos)) {
$data = iconv('gbk','utf-8',$data);
}
}
preg_match_all('/<'.$tag.'/i',$data,$pre_matches,PREG_OFFSET_CAPTURE); //获取所有div前缀
preg_match_all('/<\/'.$tag.'/i',$data,$suf_matches,PREG_OFFSET_CAPTURE); //获取所有div后缀
$hit = strpos($data,$tag_id);
if($hit == -1) return false; //未命中
$divs = array(); //合并所有div
foreach($pre_matches[0] as $index=>$pre_div){
$divs[(int)$pre_div[1]] = 'p';
$divs[(int)$suf_matches[0][$index][1]] = 's';
}
//对div进行排序
$sort = array_keys($divs);
asort($sort);
$count = count($pre_matches[0]);
foreach($pre_matches[0] as $index=>$pre_div){
//<div $hit <div+1 时div被命中
if(($pre_matches[0][$index][1] < $hit) && ($hit < $pre_matches[0][$index+1][1])){
$deeper = 0;
//弹出被命中div前的div
while(array_shift($sort) != $pre_matches[0][$index][1] && ($count--)) continue;
//对剩余div进行匹配，若下一个为前缀，则向下一层，$deeper加1，
//否则后退一层，$deeper减1，$deeper为0则命中匹配，计算div长度
foreach($sort as $key){
if($divs[$key] == 'p') $deeper++;
else if($deeper == 0) {
$length = $key-$pre_matches[0][$index][1];
break;
}else {
$deeper--;
}
}
$hitDivString = substr($data,$pre_matches[0][$index][1],$length).'</'.$tag.'>';
break;
}
}
return $hitDivString;
}
echo getWebTag('id="nav"','http://mail.163.com/html/mail_intro/','ul');
echo getWebTag('id="homeBanners"','http://mail.163.com/html/mail_intro/');
echo getWebTag('id="performance"','http://mail.163.com/html/mail_intro/','section');
//End_php

代码如下:

<?php
$array = array(
'abcd',
'abcde',
'bcde',
'cdef',
'defg',
'defgh'
);
$str = '~'.implode('~',$array).'~';
$word = $_GET['word']; //url = xxx.php?word=a
preg_match_all("/~({$word}(?:[^~]*))/i",$str,$matches);
var_dump($matches[1]);

//输出
//array(2) { [0]=> string(4) "abcd" [1]=> string(5) "abcde" }
//End_php

代码如下:

$arr = array('Hello','World!','Beautiful','Day!');
echo implode(" ",$arr);输出
Hello World! Beautiful Day!

代码如下:

$a=array("a"=>"Dog","b"=>"Cat","c"=>"Horse");
print_r(array_rand($a,1));

代码如下:

$a=array("a"=>"Dog","b"=>"Cat","c"=>"Horse");
print_r(array_rand($a,2));View Code
Array ( [0] => c [1] => b )

代码如下:

$a=array(0=>"5",1=>"15",2=>"25");
echo array_sum($a);

代码如下:

$a=array(0=>"Dog",1=>"Cat",2=>"Horse",3=>"Bird");
print_r(array_slice($a,1,2));View Code
Array ( [0] => Cat [1] => Horse )

代码如下:

$a=array("Cat","Dog","Horse","Dog");
print_r(array_count_values($a));输出:
Array ( [Cat] => 1 [Dog] => 2 [Horse] => 1 )

代码如下:

function array2xml($array, $tag) {
function ia2xml($array) {
$xml="";
foreach ($array as $key=>$value) {
if (is_array($value)) {
$xml.="<$key>".ia2xml($value)."</$key>";
} else {
$xml.="<$key>".$value."</$key>";
}
}
return $xml;
}
return simplexml_load_string("<$tag>".ia2xml($array)."</$tag>");
}
$test['type']='lunch';
$test['time']='12:30';
$test['menu']=array('entree'=>'salad', 'maincourse'=>'steak');
echo array2xml($test,"meal")->asXML();

代码如下:

<?xml version="1.0"?>
<meal>
<type>lunch</type>
<time>12:30</time>
<menu>
<entree>salad</entree>
<maincourse>steak</maincourse>
</menu>
</meal>