Available free from www.ILoveJackDaniels.com

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Available free from www.ILoveJackDaniels.com Arrays

array_intersect array_merge array_pop array_push array_reverse array_walk count in_array Date and Time date mktime strtotime time Filesystem clearstatcache copy fclose fgets file filemtime filesize file_exists fopen fread fwrite is_dir is_file readfile Headers header headers_sent setcookie

Mail mail Numbers floor ceil number_format round Miscellaneous define eval exit

Network fsockopen PHP Options ini_get ini_restore ini_set phpinfo Execution exec

Regex ereg eregi ereg_replace eregi_replace split

spliti preg_match preg_match_all preg_replace preg_split Sessions session_destroy session_id session_start Strings addslashes crypt echo explode implode md5 nl2br sprintf strip_tags stripslashes stristr strpos strrev strstr strtolower strtoupper str_replace substr trim URLs rawurldecode rawurlencode urldecode urlencode Variables empty is_array is_int is_null is_numeric is_object isset serialize unserialize SuperGlobals

$_ENV

$_GET

$_POST

$_COOKIE

$_SESSION

$_SERVER

$_FILES

$_REQUEST

$GLOBALS Y

y F M m n D l d j

h g H G i s

w z W

t

a A B S

T Z O I L

U c r

4 digit year 2 digit year Long month Short month

Month (leading zeros) Month

Short day name Long day name Day (leading zeros) Day

12 Hour (leading zeros) 12 Hour

24 Hour (leading zeros) 24 Hour

Minutes (leading zeros) Seconds (leading zeros)

Day of week

¹

Day of year Week of year

²

Days in month

Swatch Internet Time Ordinal Suffix

Timezone of machine Timezone offset (seconds) Difference to GMT (hours) Daylight savings

Leap year

Seconds since Epoch

³

ISO 8601 (PHP 5) RFC 2822

2005 05 January Jan 01 to 12 1 to 12 Mon Monday 01 to 31 1 to 31

01 to 12 1 to 12 00 to 23 0 to 23 00 to 59 00 to 59

0 to 6 0 to 365 1 to 53 28 to 31

am or pm AM or PM 000 to 999 st, nd, td, th GMT

+0200 1 or 0 1 or 0

date("w"): 0 is Sunday, 6 is Saturday.

Week that overlaps two years belongs to year that contains most days of that week. Hence week number for 1st January of a given year can return 53rd week if week belongs to previous year.

date("W", mktime(0, 0, 0, 12, 28, $year)) always gives correct number of weeks in

$year.

The Epoch was the 1st January 1970.

1.

2.

3. ^

$ . (a|b) (...) [abc]

[^abc]

\s a?

a*

a+

a{3}

a{3,}

a{3,6}

\

[:punct:]

[:space:]

[:blank:]

Start of string End of string Any single character a or b

Group section

Item in range (a or b or c) Not in range (not a or b or c) White space

Zero or one of a Zero or more of a One or more of a Exactly 3 of a 3 or more of a Between 3 and 6 of a Escape character

Any punctuation symbol Any space character Space or tab

r r+

w w+

a a+

Read

Read and write, prepend Write, truncate

Read and write, truncate Write, append

Read and write, append array_push ( array, element )

in_array ( needle, haystack ) explode ( separator, string ) split ( pattern, string ) preg_split ( pattern, string ) ereg ( pattern, string ) strpos ( haystack, needle )

str_replace ( search, replace, string ) i

s m U e x

Case-insensitive Period matches newline

^ and $ match lines

Ungreedy matching

Evaluate replacement

Pattern over several lines