Command Line PHP Basics

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1. #!/usr/bin/php PHP on the command line Tuesday, February 19, 13
2. ./phpcl --overview • Basic PHP Commands • PHP Scripts • Arguments • Real World Example Tuesday, February 19, 13
3. Practical PHP On the command line Tuesday, February 19, 13
4. php -v → php -v PHP 5.3.15 with Suhosin-Patch (cli) (built: Aug 24 2012 17:45:44) Copyright (c) 1997-2012 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2012 Zend Technologies Tuesday, February 19, 13
5. php --ini → php --ini Configuration File (php.ini) Path: /etc Loaded Configuration File: /private/etc/php.ini Scan for additional .ini files in: (none) Additional .ini files parsed: (none) Tuesday, February 19, 13
6. php lint Tuesday, February 19, 13
7. php -l → php -l stdin.php No syntax errors detected in stdin.php Tuesday, February 19, 13
8. php -l → php -l stdin.php PHP Parse error: parse error in stdin.php on line 5 Errors parsing stdin.php Tuesday, February 19, 13
9. php -l • Automate during rollup, commits • Prevent silly mistakes, because, let’s face it, you aren’t doing TDD • Sometimes tools might modify output, even accidentally • Ensures code can run on the version of PHP installed Tuesday, February 19, 13
10. php -a PHP’s interactive shell Not quite a REPL, doesn’t really matter (Read-Evaluate-Print Loop) Tuesday, February 19, 13
11. php -a → php -a Interactive shell php > $a = range(1,3); php > var_dump($a); array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } Tuesday, February 19, 13
12. php -a php > class Foo { public $bar = 'baz'; } php > $foo = new Foo(); php > echo $foo->bar; baz Tuesday, February 19, 13
13. php -a php > function p($v){ php { echo md5('this_is_really_secure_right?'.$v); php { } php > p(134); bb33942de0b7f8f7fda76ef41ee55654 php > p('happy'); fbc327fa6e16a971130d72bd72e7e55f Tuesday, February 19, 13
14. php -a php > var_dump(array()===array()); bool(true) php > var_dump( ((array) new stdClass()) === array() ); bool(true) php > class Foo{function __toString(){return '';}} php > $foo = new Foo(); php > var_dump( ((string) $foo) === '' ); bool(true) Tuesday, February 19, 13
15. php -a • Great for resolving quick question • Winning arguments • Temporary scripts, functions Tuesday, February 19, 13
16. php -a • Has autocomplete php > new PDO PDO pdo_drivers PDOException PDORow PDOStatement Tuesday, February 19, 13
17. PHP Scripts Tuesday, February 19, 13
18. Running Scripts • Command Line • $ php ./script.php • Bash Bang • #!/usr/bin/php Tuesday, February 19, 13
19. Command Line • Useful for executing code that might also run from a web server • Doesn’t assume existing installation directory Tuesday, February 19, 13
20. Bash Bang • $ ./script.php • $ ./script • $ script • #!/usr/bin/env php > #!/usr/bin/php Tuesday, February 19, 13
21. getopt <?php $options = getopt("f:hp:"); var_dump($options); → php ./getopt.php -f hello -p asdf -h array(3) { ["f"]=> string(5) "hello" ["p"]=> string(4) "asdf" ["h"]=> bool(false) } Tuesday, February 19, 13
22. getopt • f: - Required value • v:: - Optional value • a - No value • $opts = getopt(‘f:v::a’); Tuesday, February 19, 13
23. getopt • getopt( $shortOptions, $longOptions ) Tuesday, February 19, 13
24. getopt long options • $longOptions = array( • ‘required:’, • ‘optional::’, • ‘option’ • ); • $ script --required 123 --optional=”value is here” --option Tuesday, February 19, 13
25. getopt • $opts = getopt(‘v’,array(‘verbose’)); • $ script -v • $ script --verbose Tuesday, February 19, 13
26. getopt • php.net/getopt • > 5.3 Works on windows, plus support for ::, =, and longopts • < 5.3 misses those critical features Tuesday, February 19, 13
27. time to see code Tuesday, February 19, 13