PHP的标准输入? [英] PHP standard input?

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问题描述

我知道PHP通常用于web开发,其中 没有标准输入,但是PHP声称可以用作通用脚本语言,如果你确实遵循它的基于web的时髦约定。我知道PHP使用 print 打印到 stdout (或者任何你想要调用它的东西) > echo ,这很简单,但我想知道PHP脚本如何从 stdin (特别是使用 fgetc(),但任何输入函数是好的),或者这是甚至可能的?

I know PHP is usually used for web development, where there is no standard input, but PHP claims to be usable as a general-purpose scripting language, if you do follow it's funky web-based conventions. I know that PHP prints to stdout (or whatever you want to call it) with print and echo, which is simple enough, but I'm wondering how a PHP script might get input from stdin (specifically with fgetc(), but any input function is good), or is this even possible?

推荐答案

通过创建文件句柄 php:// stdin ,读取 stdin 然后读取(或者,正如你已经说过的, fgetc()用于单个字符):

It is possible to read the stdin by creating a file handle to php://stdin and then read from it with fgets() for a line for example (or, as you already stated, fgetc() for a single character):

<?php
$f = fopen( 'php://stdin', 'r' );

while( $line = fgets( $f ) ) {
  echo $line;
}

fclose( $f );
?>

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