sudo apt-get install php5 php5-mysql php5-xsl php-apc php5-xdebug

location of php.ini:
	/etc/php5/cli/ 
	/etc/php5/apache/

errors:
	display_errors = On
	error_reporting = E_ALL
		or others
	error_reporting(E_ALL);
	ini_set('display_errors', TRUE);
	ini_set('display_startup_errors', TRUE);

memory:
	ini_set("memory_limit","32M");

for windows and apache:
 	in httpd.conf
	to end of LoadModule list:
		LoadModule php5_module "<+path to php5apache2_2.dll in php installation folder+>"
		does not exist in non-thread-safe version
	to end of httpd.conf:
		PHPIniDir "path to php.ini dir"
	after AddType lines
		AddType application/x-httpd-php .php
	DirectoryIndex index.php index.html
	if mysqli missing: comment the ;extend=php_mysqli.dll restart, uncomment, restart

transliteration: iconv library needs utf-8 encoding

php tags: <?php ?>
	omit closing tags: to avoid blanks
		zend and drupal standard
		http://stackoverflow.com/questions/3219383/why-do-some-scripts-omit-the-closing-php-tag

operators:
	modulo: %

string/array operations:
	explode (delimiter, string)
	formatted string: sprintf();
	remove last element: array_pop()
	remove first element: array_shift()
	array keys: array_keys
		for an object: get_object_vars

foreach:
	foreach (array as value)
	foreach (array as value => key)

replace: str_replace(search, replace, subject)
	preg_replace(pattern, replacement, subject)
		see [[regexp]]
	use \0 usw (escaped to \\0)
	replace characters: strtr($str, "éàè", "eae");

convert urls to links:
	$str = ereg_replace("[[:alpha:]]+://[^<>[:space:]]+[[:alnum:]/]",
		"<a href=\"\\0\">\\0</a>", $str);  

my conventions:
	define(BASE_PATH,'/web/path/to/main/dir');

execute: exec(cmd, output_arr, return_status)

string functions:
	find first occurrence: strpos()
	substr(str,start,length)

headers:
	header("Content-type: text/javascript");	
	text/css
	content-types: mime-types
		image/gif, image/jpeg, text/plain, text/richtext, application/postscript, multipart
	Content-Disponition: attachment; filename=fname.pdf
	redirect: header("Location: http://www.example.com/");

command line arguments:
	$argv

function arguments as array: func_get_args()

get directory from path: dirname

mysql:
	$result = mysql_query(...);
	if (!$result) {
			... mysql_error();
	}
	while ($row = mysql_fetch_assoc($result)) {

	}
	mysql_free_result($result);
	mysql_connect(server, uname, password, link);
	mysql_select_db
	mysql_close()
	mysql_fetch_assoc
	mysql_query
	mysql_error

arrays:
	in_array(element, array)
	sort: sort(), rsort()
		keep keys: asort(), arsort()

files:
	file_put_contents(file, string[, flags])
		FILE_APPEND
	overwrite:
		fopen(file,'w');
		fwrite(fd,string);
	append: fopen(file,'a');

geshi:
	import geshi.php
	new GeSHi();	
	set_language
	set_source
	tab width:
		set_header_type(GESHI_HEADER_DIV)
		set_tab_width
	parse_code

exec:
	use escapeshellarg or escapeshellcmd

date/time:
	now's timestamp: time()
	create a timestamp/date:
		mktime(hour, minute, secnd, month, day, year)
	parse a time/date:
		strtotime(time)
		time formats
			12 hour:
				hh[ \t]meridian
				hh[.:]MM[ \t]?meridian
				hh[.:]MM[ \t]?meridian
				hh[.:]MM[.:]II[ \t]?[0-9]+meridian
			23 hour:
				T?HH[.:]MM
				T?HHMM
				T?HH[.:]MM[.:]II
				T?HHMMII
				T?HH[.:]MM[.:]II[ \t]?(tzcorrection|tz)
				T?HH[.:]MM[.:]IIfrac
				tz|tzcorrection
		date formats
			many
			iso:
				YYMMDD
				YY/MM/DD
				yy-MM-DD
				[+-]?YY-MM-DD
	information: getdate(timestamp)
		seconds: 0-59
		minutes: 0-59
		hours: 0-23
		mday: 1-31
		wday: 0(sunday)-6
		mon: 1-12
		year: 2001
		yday: 0-365
		weekday: Monday
		month: January
		0: timestamp
	formatted: date(format, timestamp)
		day of month: d
		short text of day of week: D
		day of month without 0: j
		long text of day of week: l	
		numeric day of week: N
		st, nd, rd, th: S (use jS)
		numeric day of week (sunday: 0): w
		day of year (start: 0): z
		week of year: W
		text of month: F
		numeric month: m
		short text of month: M
		numeric month without 0: n
		days in month: t
		leap year (1 or 0): L
		year number (depending on whole week number): o
		year number: Y
		two digit year number: y
		am, pm: a
		AM, PM: A
		internet time: B
		hour (01-12): g
		hour (00-23): H
		minutes (00-59): s
		microseconds: u
		timezone: e
		daylight saving time: I
		diff with GMT (+0200): O
		diff with GMT (+02:00): P
		timezone abbr: T
		timezone offset in secs: Z
		ISO 6601 (2004-02-12T15:19:21+00:00): c
		RFC 2822 formatted date (Thu, 21 Dec 2000 16:01:07 +0200): r
		time(): U

read ini files:
	parse_ini_file(file, [process sections?])
	[local] [remote]
	and in .htaccess SetEnv ENVIRONMENT local
	development phases: development, staging, production

pecl:
	http-request and so on
	install php5-dev libcurl3 libcurl-openssl-dev first
	sudo pecl install pecl_http

variables:
	get defined variables: get_defined_vars()