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PHP读取txt文件的内容并赋值给数组的代码

Jun 06, 2016 pm 08:39 PM
txt file array

使用file_get_contents()获取txt文件的内容,然后通过explode()把获得的字符串转化为数组。获得数组长度可以使用count()函数

2010-12-15.txt的文件内容如下:
代码如下:
01
02
03
04
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07
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09
10
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15
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T01
T02
T03
T04
T05
T06
T07
T08
T09
T10
T11
T12
T13
T14
T15
T16

思路如下:使用file_get_contents()获取txt文件的内容,然后通过explode()把获得的字符串转化为数组。获得数组长度可以使用count()函数。

PHP Code
代码如下:
$file = '2010-12-15.txt';
$content = file_get_contents($file);
//echo $content;

$array = explode("\r\n", $content);
//print_r($array);

for($i=0; $i〈count($array); $i++)
{
echo $array[$i].'〈br /〉';
}

关于txt文档中的换行符
在正则表达式中,有一个\n是newline的意思,又有一个\r是carriage return(就是这个导致了白痴中文翻译"回车")的意思。在处理String或者console输出的时候,无论带上哪个都能换行。

但是偏偏在txt中,哪个都不是标准的换行,只有合起来的\r\n才是换行(对于整个windows默认的换行来说,都是这样)。

意思是\r敲个回车,表明这行结束了,光标回到头去,然后再\n下移一行来个新行。

就因为这个,我用scanner()带正则表达式搜索txt文档时,一度一筹莫展,根本找不到问题在哪。

关于file_get_contents()
file_get_contents() 函数把整个文件读入一个字符串中。

file_get_contents() 函数是用于将文件的内容读入到一个字符串中的首选方法。如果操作系统支持,还会使用内存映射技术来增强性能。
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