What does php stdin mean?

stdin in php is a constant, its function is to read content from the console. When encountering this constant or opening the "php://stdin" script through the fopen() function, it will wait for user input. , until the user presses the Enter key to submit.

#The operating environment of this article: Windows 7 system, PHP version 7.4, Dell G3 computer.

What does stdin mean?

PHP STDIN usage:

"STDIN" in PHP language is used for slave control The platform reads content. When encountering this constant or opening php://stdin through the fopen() function, the script will wait for the user to input content until the user presses the Enter key to submit.

Write a stdin.php and test it:

<?php
echo "请输入内容:";
$jimmy = fgets(STDIN);
echo sprintf("输入的内容为: %s\n", $jimmy);
$demo = fopen(&#39;php://stdin&#39;, &#39;r&#39;);
echo "请输入: ";
$test = fread($demo, 12); //最多读取12个字符
echo sprintf("输入为: %s\n", $test);
fclose($demo);

Running results:

请输入内容:sad
输入的内容为: sad
请输入: asdasdasdasdasdasd
输入为: asdasdasdasd（这里因为设置了最多读取12个字符，设置更多一些就可以完整显示）

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