php fscanf 函数
fscanf
（ PHP 4中“ = 4.0.1 ， PHP 5中）
fscanf -解析输入文件的格式根据
描述
混合fscanf （资源$处理，字符串$格式[ ，混合&$... ] ）
功能fscanf （ ）类似sscanf （ ） ，但需要的投入从档案与处理和解释的投入根据指定的格式，这是文献中所述的sprintf （ ） 。
任何空格的格式字符串匹配任何空白的输入流。这意味着，即使一个标签 T在格式字符串可以匹配一个单一的空格字符输入流。
每个电话fscanf （ ）读取一行从档案。
参数
把柄
一个文件系统指针的资源，通常是创建使用fopen （ ）函数。
格式
指定格式中所描述的sprintf （ ）的文件。
...
可选的指定值。
返回值
如果只有两个参数，通过此功能，价值解析将返回一个数组。否则，如果可选参数传递，函数将返回指定数量的值。可选的参数必须通过引用传递。
修改
版本说明
4.3.0在此之前的时间，最大数量的字符读取文件是512 （或第一氮，两者排名第一） 。但现在，任意长的行会读和扫描。
实例
例如＃ 1 fscanf （ ）为例
$handle = fopen("users.txt", "r");
while ($userinfo = fscanf($handle, "%st%st%sn")) {
list ($name, $profession, $countrycode) = $userinfo;
//... do something with the values
}
fclose($handle);
?>
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