SplFileObject::fscanf

(PHP 5 >= 5.1.0)

SplFileObject::fscanf — Parses input from file according to a format

说明

public mixed SplFileObject::fscanf ( string $format [, mixed &$... ] )

Reads a line from the file and interprets it according to the specified format, which is described in the documentation for sprintf() .

Any whitespace in the format string matches any whitespace in the line from the file. This means that even a tab \t in the format string can match a single space character in the input stream.

参数

format: The specified format as described in the sprintf() documentation.
...: The optional assigned values.

返回值

If only one parameter is passed to this method, the values parsed will be returned as an array. Otherwise, if optional parameters are passed, the function will return the number of assigned values. The optional parameters must be passed by reference.

范例

Example #1 SplFileObject::fscanf() example

  <?php
$file  = new  SplFileObject ( "misc.txt" );
while ( $userinfo  =  $file -> fscanf ( "%s %s %s" )) {
    list ( $name ,  $profession ,  $countrycode ) =  $userinfo ;
     // Do something with $name $profession $countrycode
 }
 ?>

Contents of users.txt

javier   argonaut    pe
hiroshi  sculptor    jp
robert   slacker     us
luigi    florist     it

参见

fscanf() - 从文件中格式化输入