"101010100","海淀"=>"101010200","朝阳"=>"101010300"); foreach ($citycode as $arr) { echo "/> "101010100","海淀"=>"101010200","朝阳"=>"101010300"); foreach ($citycode as $arr) { echo ">

foreach 输出遇到的有关问题,求各位老师解决

WBOY
Release: 2016-06-13 12:18:05
Original
1025 people have browsed it

foreach 输出遇到的问题,求各位老师解决
$citycode = array("北京"=>"101010100","海淀"=>"101010200","朝阳"=>"101010300");

foreach ($citycode as $arr) {

echo $arr.'\\n';
}
saveFile('file.txt',$arr);

我希望file.txt里的内容为:

101010100,101010200,101010300


这个$arr要怎么写?
------解决思路----------------------

<br /><?php<br /><br />$citycode = array("北京"=>"101010100","海淀"=>"101010200","朝阳"=>"101010300");<br /><br />foreach ($citycode as $arr => $value) {<br />    $citycode[$arr] .= ',';<br />}<br />// saveFile('file.txt',$arr);<br />file_put_contents('file.txt', $citycode);<br /><br />?><br />
Copy after login

------解决思路----------------------
这样岂不是更简单
$arr = implode(',', $citycode);<br />saveFile('file.txt',$arr);
Copy after login

------解决思路----------------------
<br />$citycode = array("北京"=>"101010100","海淀"=>"101010200","朝阳"=>"101010300");<br />saveFile('file.txt',implode(',',$citycode));<br />
Copy after login

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!