时间:2021-07-01 10:21:17 帮助过:15人阅读
输出Hello from the CLI
echo "Hello from the CLI";
?>
现在,试着在命令行提示符下运行这个程序,方法是调用CLI可执行文件并提供脚本的文件名:
#php phphello.php
输出设备写一条消息,询问用户的姓名。然后它会把从标准输入设备获得的用户输入信息读
// ask for input
fwrite(STDOUT, "Enter your name: ");
// get input
$name = trim(fgets(STDIN));
// write input back
fwrite(STDOUT, "Hello, $name!");
?>
Look what happens when you run it:
shell> php hello.php
Enter your name: Joe
Hello, Joe!
在这个脚本里,fwrite()函数首先会向标准的
输出的结果看到的,传递给test.php的值会自动地作为数组元素出现在$argv里。要注意的是,$argvis的第一个自变量总是
print_r($argv);
?>
Run this script by passing it some arbitrary values, and check the output:
shell> php phptest.php chocolate 276 "killer tie, dude!"
Array
( [0] => test.php
[1] => chocolate
[2] => 276
[3] => killer tie, dude!
)
正如你可以从
输出到标准的输出
// check for all required arguments
// first argument is always name of script!
if ($argc != 4) {
die("Usage: book.php");
}
// remove first argument
array_shift($argv);
// get and use remaining arguments
$checkin = $argv[0];
$nights = $argv[1];
$type = $argv[2];
echo "You have requested a $type room for $nights nights, checking in on $checkin. Thank you for your order! ";
?>
下面是其用法的示例:
shell> php phpbook.php 21/05/2005 7 single
You have requested a single room for 7 nights, checking in on 21/05/2005. Thank you for your order!
在这里,脚本首先会检查$argc,以确保自变量的数量符合要求。它然后会从$argv里提取出每一个自变量,把它们打印