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# getopt

(PHP 4 >= 4.3.0, PHP 5)

getopt — Gets options from the command line argument list

### Description

array getopt ( string `$options` [, array `$longopts` ] )

Parses options passed to the script.

### Parameters

`options`
  Each character in this string will be used as option characters and matched against options passed to the script starting with a single hyphen (-). For example, an option string "x" recognizes an option -x.
`longopts`
  An array of options. Each element in this array will be used as option strings and matched against options passed to the script starting with two hyphens (--). For example, an longopts element "opt" recognizes an option --opt.

  > Note: Prior to PHP5.3.0 this parameter was only available on few systems

The `options` parameter may contain the following elements:

- Individual characters (do not accept values)
- Characters followed by a colon (parameter requires value)
- Characters followed by two colons (optional value)

Option values are the first argument after the string. It does not matter if a value has leading white space or not.

> Note: Optional values do not accept " " (space) as a seperator.

> Note: The format for the `options` and `longopts` is almost the same, the only difference is that `longopts` takes an array of options (where each element is the option) where as `options` takes a string (where each character is the option).

### Return Values

This function will return an array of option / argument pairs or `FALSE` on failure.

### ChangeLog

Version | Description
--- | ---
5.3.0 | Added support for "=" as argument/value separator.
5.3.0 | Added support for optional values (specified with "::").
5.3.0 | This function is no longer system dependent and works on Windows too.

### Examples

Example #1 getopt() Example

`<?php
$options = getopt("f:hp:");
var_dump($options);
?>`

Running the above script with php script.php -fvalue -h will output:

    array(2) {
      ["f"]=>
      string(5) "value"
      ["h"]=>
      bool(false)
    }

Example #2 getopt() Example#2

`<?php
$shortopts = "";
$shortopts .= "f:"; // Required value
$shortopts .= "v::"; // Optional value
$shortopts .= "abc"; // These options do not accept values
$longopts = array(
"required:", // Required value
"optional::", // Optional value
"option", // No value
"opt", // No value
);
$options = getopt($shortopts, $longopts);
var_dump($options);
?>`

Running the above script with php script.php -f "value for f" -v -a --required value --optional="optional value" --option will output:

    array(6) {
      ["f"]=>
      string(11) "value for f"
      ["v"]=>
      bool(false)
      ["a"]=>
      bool(false)
      ["required"]=>
      string(5) "value"
      ["optional"]=>
      string(14) "optional value"
      ["option"]=>
      bool(false)
    }

Example #3 getopt() Example#3

Passing multiple options as one

`<?php
$options = getopt("abc");
var_dump($options);
?>`

Running the above script with php script.php -aaac will output:

    array(2) {
      ["a"]=>
      array(3) {
        [0]=>
        bool(false)
        [1]=>
        bool(false)
        [2]=>
        bool(false)
      }
      ["c"]=>
      bool(false)
    }

### Notes

> Note: The register_argc_argv option must be enabled for this function to work

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