PHP/CLI: Difference between revisions
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Although [[PHP]] is most commonly used to write [[web application]]s, it can also be used for scripts that run from a [[command line interface]] (CLI). The CLI environment is a little different than the web environment, and PHP's current documentation doesn't make it easy to locate the relevant pieces. | Although [[PHP]] is most commonly used to write [[web application]]s, it can also be used for scripts that run from a [[command line interface]] (CLI). The CLI environment is a little different than the web environment, and PHP's current documentation doesn't make it easy to locate the relevant pieces. | ||
== | ==Arguments== | ||
Predefined variables: | Predefined variables: | ||
* <code>[https://www.php.net/manual/en/reserved.variables.argc.php $argc]</code> contains the number of arguments passed to the current script | * <code>[https://www.php.net/manual/en/reserved.variables.argc.php $argc]</code> contains the number of arguments passed to the current script | ||
| Line 13: | Line 13: | ||
* <code>[https://www.php.net/manual/en/function.cli-set-process-title.php cli_set_process_title()]</code> | * <code>[https://www.php.net/manual/en/function.cli-set-process-title.php cli_set_process_title()]</code> | ||
* <code>[https://www.php.net/manual/en/function.glob.php glob()]</code> is the interface to the system's file-[[globbing]] function | * <code>[https://www.php.net/manual/en/function.glob.php glob()]</code> is the interface to the system's file-[[globbing]] function | ||
==Interactivity== | |||
* [https://www.php.net/manual/en/book.readline.php GNU Readline] manages editable input lines | |||
* <code>[https://www.php.net/manual/en/function.fgetc.php fgetc()]</code> reads a single character, but waits for a CRLF | |||
** See the comments for ways to wait for the user to actually just press a single character. | |||
==Links== | ==Links== | ||
* [https://www.php.net/manual/en/features.commandline.php Using PHP from the command line] | * [https://www.php.net/manual/en/features.commandline.php Using PHP from the command line] | ||
Revision as of 13:26, 31 July 2022
Although PHP is most commonly used to write web applications, it can also be used for scripts that run from a command line interface (CLI). The CLI environment is a little different than the web environment, and PHP's current documentation doesn't make it easy to locate the relevant pieces.
Arguments
Predefined variables:
$argccontains the number of arguments passed to the current script$argv[]contains an array of all the arguments passed to the script$argv[0]is always the name that was used to run the script.
Other:
getopt()parses individual arguments in a standard way- Note that this ignores any options listed after non-options.
cli_get_process_title()cli_set_process_title()glob()is the interface to the system's file-globbing function
Interactivity
- GNU Readline manages editable input lines
fgetc()reads a single character, but waits for a CRLF- See the comments for ways to wait for the user to actually just press a single character.
