PHP

Array

array_merge(arr1,arr2..)

array_pop(arr)

array_push(arr,var1[,var2..])

asort(arr[,sort_flags])

count($var[,$mode])

in_array(needle,haystack)

String

crypt(str,salt)

explode(sep,str)

implode(glue,arr)

htmlspecialchars(str)

nl2br(str)

strip_tags(str,allowed_tags)

str_replace(search,replace,str)

strpos(haystack,needle)

substr(str,start,len)

trim(str)

Filesystem

copy(src,dst)

fclose(handle)

fgets(handle,len)

file(file)

file_exists(file)

file_get_contents(file)

file_put_contents(file)

filemtime(file)

filesize(file)

fopen(file,mode)

fread(handle,len)

fwrite(handle,str)

is_dir(flie)

is_file(file)

readfile(file) // Outputs a file

tmpfile()

unlink(file)

Template

<?php require_once(   __DIR__ . "/../sys/init.php"); echo "Hello, world!";

Regex

preg_match(pat,str)

preg_replace(pat,replace,str)

preg_split(pat,str)

split(pat,str)

Regex Syntax

^	Start of string
$	End of string
.	Any single character
(a|b)	a or b
(…)	Group
[abc]	a, b or c
[^abc]	not a, b or c
a?	Zero or one of a
a*	Zero or more of a
a*?	Zero or more of a, un-greedy
a+	One or more of a
a+?	One or more of a, un-greedy
a{3,}	Three or more of a
a{,6}	Up to 6 of a
[:blank:]	Space or tab

Regex Modifier

i	Case-insensitive
s	Period matches newline
m	^ and $ match lines
U	Un-greedy matching

JSON

json_decode(str)

json_encode(arr)

Date

date(fmt[,time])

date_default_timezone_set(tz); // Use "Asia/Tokyo" in Japan.

date_parse_from_format(fmt,str)

mktime(h,mi,s,mo,d,y)

time()

Date Formatting

Y	4 digit year(2013)
y	2 digit year(13)
m	Month (01 to 12)
d	Day (01 to 31)
H	24 Hour (00 to 23)
i	Minutes (00 to 59)
s	Seconds (00 to 59)
w	Day of week (0 to 6) // 0 is Sun, 6 is Sat
W	Week of year (1 to 53)
t	Days in month (28 to 31)
L	Leap year (1 or 0)
U	Seconds since Epoch(=1970.01.01)

PDO

PDO::__construct(dsn,user,pass) // mysql:host=..;dbname=..

PDO::exec(sql)

PDO::lastInsertId()

PDO::prepare(sql)

PDO::query(sql)

PDOStatement::closeCursor()

PDOStatement::errorInfo()

PDOStatement::execute()

PDOStatement::fetch()

PDOStatement::fetchAll()

PDOStatement::setFetchMode(m)

References

http://php.net/manual/en/

http://www.addedbytes.com/