PHP Command Line Interface (CLI) Edge Cases of getopt()
Example
This example shows the behaviour of getopt when the user input is uncommon:
getopt.php
var_dump(
getopt("ab:c::", ["delta", "epsilon:", "zeta::"])
);
$ php getopt.php -a -a -bbeta -b beta -cgamma --delta --epsilon --zeta --zeta=f -c gamma
array(6) {
["a"]=>
array(2) {
[0]=>
bool(false)
[1]=>
bool(false)
}
["b"]=>
array(2) {
[0]=>
string(4) "beta"
[1]=>
string(4) "beta"
}
["c"]=>
array(2) {
[0]=>
string(5) "gamma"
[1]=>
bool(false)
}
["delta"]=>
bool(false)
["epsilon"]=>
string(6) "--zeta"
["zeta"]=>
string(1) "f"
}
From this example, it can be seen that:
- Individual options (no colon) always carry a boolean value of
falseif enabled. - If an option is repeated, the respective value in the output of
getoptwill become an array. - Required argument options (one colon) accept one space or no space (like optional argument options) as separator
- After one argument that cannot be mapped into any options, the options behind will not be mapped either.
