如何将空值传递给 php cli

Question

就像标题一样，我有一个 php 脚本：demo.php 并通过 php cli 运行：

demo.php val1 val2

那么如何将 val1=empty 值传递给 php cli？

demo.php '' val2

我想要成为val1或empty为空

Answer 1

你应该命名你的参数：php demo.php -a "val1" -b "val2"代码：$options = getopt('a:b:');if (isset($options['a'])) { /* param "a" has been provided */ }if (isset($options['b'])) { /* param "b" has been provided */ }