PHP - Manual手册 - Function Reference函数参考 - File System Related Extensions文件系统相关扩展 - Filesystem文件系统 - Filesystem Functions文件系统函数 -

PHP - Manual手册 - Function Reference函数参考 - File System Related Extensions文件系统相关扩展 - Filesystem文件系统 - Filesystem Functions文件系统函数 - fscanf从文件中格式化输入

fscanf

(PHP 4 >= 4.0.1, PHP 5)
fscanf — Parses input from a file according to a format

Description

mixed [b]fscanf[/b] ( resource $handle , string $format [, mixed &$... ] )

The function fscanf() is similar to sscanf(), but it takes its input from a file associated with handle and interprets the input according to the specified format , which is described in the documentation for sprintf().
Any whitespace in the format string matches any whitespace in the input stream. This means that even a tab /t in the format string can match a single space character in the input stream.

Parameters

handle
A file system pointer resource that is typically created using fopen().
format
The specified format as described in the sprintf() documentation.
...
The optional assigned values.

Return Values

If only two parameters were passed to this function, 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.

ChangeLog

Version	Description
4.3.0	Before this time, the maximum number of characters read from the file was 512 (or up to the first /n, whichever came first). But now, arbitrarily long lines will be read and scanned.

Examples

Example #1 [b]fscanf() Example[/b]

<?php

$handle = fopen("users.txt", "r");

while ($userinfo = fscanf($handle, "%s/t%s/t%s/n")) {

list ($name, $profession, $countrycode) = $userinfo;

//... do something with the values

}

fclose($handle);

?>

Example #2 Contents of users.txt

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

See Also

fread()

fgets()

fgetss()

sscanf()

printf()

sprintf()

[PHP - 官方网站]

http://www.php.net/

[PHP - 关键词]

php
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[PHP - 相关论坛]

http://php.board.newsmth.net/
http://homepage.bdwm.net/
http://forum.csdn.net/SList/PHP/

[PHP - 下载]

AppServ 2.5.9, http://www.appservnetwork.com/
Zend Optimizer 3.3.0a, http://www.zend.com/products/zend_optimizer

phpMyAdmin 2.11.2, http://www.phpmyadmin.net/home_page/index.php
Zend Core 2.5.0, http://www.zend.com/products/zend_core
Zend Platform 3.0.3, http://www.zend.com/products/zend_platform
PHP 5.2.5, http://www.php.net/releases/5_2_5.php
Zend Studio 5.5, http://www.zend.com/products/zend_studio
Zend Guard 5.0, http://www.zend.com/products/zend_guard PDT Project 1.0.3, http://www.eclipse.org/pdt/

[PHP - Manual手册]

http://www.php.net/manual/

[PHP - XOOPS]

http://xoops.org.cn/

[PHP - phpBB]

http://www.phpbbchina.com/

[PHP - Manual手册]

file_exists检查文件或目录是否存在, http://www.php.net/manual/zh/function.file-exists.php

[PHP - Manual手册 - 下载]

http://www.php.net/download-docs.php

[PHP - Manual手册 - 语言参考 - 类型]

字符串转换为数值, http://www.php.net/manual/zh/language.types.string.php#language.types.string.conversion

[PHP - Manual手册 - Language Reference语言参考 - Variables变量]

Variable scope变量可见性, http://www.php.net/manual/en/language.variables.scope.php

[PHP - Manual手册 - 第 13 章 常量]

魔术常量, http://www.php.net/manual/zh/language.constants.predefined.php

[PHP - Manual手册 - 语言参考 - 运算符]

错误控制运算符, http://www.php.net/manual/zh/language.operators.errorcontrol.php

位运算符, http://www.php.net/manual/zh/language.operators.bitwise.php

[PHP - Manual手册 - 语言参考 - 控制结构]

foreach遍历数组, http://www.php.net/manual/zh/control-structures.foreach.php

[PHP - Manual手册 - 语言参考 - 类与对象（PHP 5）]

Object cloning对象克隆, http://www.php.net/manual/zh/language.oop5.cloning.php
Class Abstraction类抽象, http://www.php.net/manual/zh/language.oop5.abstract.php

[PHP - Manual手册 - 第20章 异常处理]

概述, http://www.php.net/manual/zh/language.exceptions.php

用异常处理php改进流程

[PHP - Manual手册 - 第21章 引用的解释]

引用返回, http://www.php.net/manual/zh/language.references.return.php

[PHP - Manual手册 - 特点 - PHP 的命令行模式]

PHP 的命令行模式, http://www.php.net/manual/zh/features.commandline.php
表 43.2. CLI 专用常量, http://www.php.net/manual/zh/features.commandline.php#id2715646

[PHP - Manual手册 - V. Array 数组函数]

计算数组的交集, http://www.php.net/manual/zh/function.array-intersect.php
array_merge合并一个或多个数组, http://www.php.net/manual/zh/function.array-merge.php

reset将数组的内部指针指向第一个单元, http://www.php.net/manual/zh/function.reset.php

[PHP - Manual手册 - XVIII. CURL, 客户端URL库函数]

概述, http://www.php.net/manual/zh/ref.curl.php
curl_setopt设置cURL传输的选项, http://www.php.net/manual/zh/function.curl-setopt.php

[PHP - Manual手册 - XXII. Date/Time 日期／时间函数]

date格式化一个本地时间／日期, http://www.php.net/manual/zh/function.date.php

[PHP - Manual手册 - Function Reference函数参考 - File System Related Extensions文件系统相关扩展 - Directories目录 - Directory Functions目录函数]

scandir列出指定路径中的文件和目录, http://www.php.net/manual/en/function.scandir.php

[PHP - Manual手册 - Function Reference函数参考 - File System Related Extensions文件系统相关扩展 - Filesystem文件系统 - Filesystem Functions文件系统函数]

fscanf从文件中格式化输入, http://www.php.net/manual/en/function.fscanf.php
glob按模式获取文件名, http://www.php.net/manual/en/function.glob.php

[PHP - Manual手册 - XXXIII. Error Handling and Logging Functions错误处理和日志函数]

概述, http://www.php.net/manual/zh/ref.errorfunc.php

[PHP - Manual手册 - 函数参考 - Filesystem 文件系统函数]

is_uploaded_file判断文件是否是通过 HTTP POST 上传的, http://www.php.net/manual/zh/function.is-uploaded-file.php

fgetcsv从文件指针中读入一行并解析 CSV 字段, http://www.php.net/manual/zh/function.fgetcsv.php
is_dir判断给定文件名是否是一个目录, http://www.php.net/manual/zh/function.is-dir.php is_file判断给定文件名是否为一个正常的文件, http://www.php.net/manual/zh/function.is-file.php

[PHP - Manual手册 - XLVII. Function Handling Functions函数管理函数]

register_shutdown_function注册一个脚本结束时调用的函数, http://www.php.net/manual/zh/function.register-shutdown-function.php

[PHP - Manual手册 - XC. Miscellaneous Functions杂项函数]

sleep延迟执行, http://www.php.net/manual/zh/ref.misc.php
uniqid生成唯一ID, http://www.php.net/manual/zh/function.uniqid.php

[PHP - Manual手册 - XCVIII. MySQL 函数]

mysql_real_escape_string转义SQL语句中使用的字符串中的特殊字符，并考虑到连接的当前字符集, http://www.php.net/manual/zh/function.mysql-real-escape-string.php

[PHP - Manual手册 - CII. Network Functions网络函数]

setcookie发送一个cookie, http://www.php.net/manual/zh/function.setcookie.php

[PHP - Manual手册 - 函数参考 - PHP Options&Information - PHP选项与信息]

extension_loaded查询是否加载指定的扩展, http://www.php.net/manual/zh/function.extension-loaded.php
dl运行时加载PHP扩展, http://www.php.net/manual/zh/function.dl.php

[PHP - Manual手册 - CXXVII. PostgreSQL 数据库函数]

pg_insert将数组插入到表中, http://www.php.net/manual/zh/index.php

[PHP - Manual手册 - CXXX. Program Execution Functions程序调用函数]

proc_open执行命令并打开用于输入输出的文件指针, http://www.php.net/manual/zh/function.proc-open.php

[PHP - Manual手册 - CXLIX. Session 会话处理函数]

session.save_path 定义了传递给存储处理器的参数, http://www.php.net/manual/zh/ref.session.php#ini.session.save-path
session.use_only_cookies指定是否在客户端仅仅使用 cookie 来存放会话 ID, http://www.php.net/manual/zh/ref.session.php#ini.session.use-only-cookies

[PHP - Manual手册 - 函数参考 - SOAP Functions - SOAP函数]

soap.wsdl_cache_enabled启用或禁用WSDL缓存功能, http://www.php.net/manual/zh/ref.soap.php#ini.soap.wsdl-cache-enabled
SOAP configuration options missing documentation文档中丢失SOAP配置选项, http://bugs.php.net/bug.php?id=38644

[PHP - Manual手册 - 函数参考 - String 字符串处理函数]

str_pad使用另一个字符串将一个字符串填充到指定长度, http://www.php.net/manual/zh/function.str-pad.php
strpos查找一个字符串第一次出现的位置, http://www.php.net/manual/zh/function.strpos.php
substr返回字符串中的一部分, http://www.php.net/manual/zh/function.substr.php

str_replace用替换字符串替换所有出现的搜索字符串, http://www.php.net/manual/zh/function.str-replace.php explode使用一个字符串分割另一个字符串, http://www.php.net/manual/zh/function.explode.php

[PHP - Manual手册 - Function Reference函数参考 - Other Basic Extensions其他基本扩展 - Tidy]

Tidy Functions - Tidy函数, http://www.php.net/manual/en/ref.tidy.php

[PHP - Manual手册 - CLXVII. Tokenizer Functions解析器代号函数]

Tokenizer Functions解析器代号函数, http://www.php.net/manual/zh/ref.tokenizer.php
token_get_all把给定源代码分解成解析器代号, http://www.php.net/manual/zh/function.token-get-all.php

[PHP - Manual手册 - CLXIX. URL 函数]

概述, http://www.php.net/manual/zh/ref.url.php

[PHP - Manual手册 - Function Reference函数参考 - Variable and Type Related Extensions变量和类型相关扩展 - Arrays数组 - Array Functions数组函数]

ksort对数组按照键名排序, http://www.php.net/manual/en/function.ksort.php

[PHP - Manual手册 - Function Reference函数参考 - Variable and Type Related Extensions变量和类型相关扩展 - Variable handling变量操作 - Variable handling Functions变量操作函数]

is_numeric检测变量是否为数字或数字字符串, http://www.php.net/manual/en/function.is-numeric.php
serialize产生一个可存储的值的表示, http://www.php.net/manual/zh/function.serialize.php settype设置变量的类型, http://www.php.net/manual/zh/function.settype.php

[PHP - Manual手册 - CLXXXVII. Zip File Functions - Zip文件压缩函数]

概述, http://www.php.net/manual/zh/ref.zip.php

[PHP - Manual手册 - 附录 - php.ini 配置选项]

register_globals 决定是否将 EGPCS（Environment，GET，POST，Cookie，Server）变量注册为全局变量, http://www.php.net/manual/zh/ini.core.php#ini.register-globals
short_open_tag决定是否允许使用PHP代码开始标志的缩写形式, http://www.php.net/manual/zh/ini.core.php#ini.short-open-tag php.ini 核心配置选项说明 - file_uploads, http://www.php.net/manual/zh/ini.core.php#ini.file-uploads

[PHP - Manual手册 - 附录 L. 保留字列表]

服务器变量：$_SERVER, http://www.php.net/manual/zh/reserved.variables.php#reserved.variables.server

[PHP - Manual手册 - 附录 Q. PHP 类型比较表]

表 Q.2. 用 == 进行松散比较, http://www.php.net/manual/zh/types.comparisons.php#id9240444

[PHP - 应用实例]

语法着色, php.exe -s "%1" > "%1.html"



移除SimpleXML对象中的子对象

算24点