php-cheat-sheet-v2.pdf

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PHP Cheat Sheet
Array Functions
Regular Expression Functions
Date Formatting
array_diff (arr1, arr2 ...)
array_filter (arr, function)
array_flip (arr)
array_intersect (arr1, arr2 ...)
array_merge (arr1, arr2 ...)
array_pop (arr)
array_push (arr, var1, var2 ...)
array_reverse (arr)
array_search (needle, arr)
array_walk (arr, function)
count (count)
in_array (needle, haystack)
ereg (pattern, str)
split (pattern, str)
ereg_replace (pattern, replace, str)
preg_grep (pattern, arr)
preg_match (pattern, str)
preg_match_all (pattern, str, arr)
preg_replace (pattern, replace, str)
preg_split (pattern, str)
Y
y
F
M
m
n
D
l
d
j
4 digit year (2008)
2 digit year (08)
Long month (January)
Short month (Jan)
Month 4 (01 to 12)
Month (1 to 12)
Short day name (Mon)
Long day name (Monday) (lowercase L)
Day 4 (01 to 31)
Day (1 to 31)
Regular Expressions Syntax
^
$
.
(a|b)
(...)
[abc]
[^abc]
\s
a?
a*
a*?
a+
a+?
a{3}
a{3,}
a{,6}
a{3,6}
a{3,6}?
\
[:punct:]
[:space:]
[:blank:]
Start of string
End of string
Any single character
a or b
Group section
Item in range (a, b or c)
Not in range (not a, b or c)
White space
Zero or one of a
Zero or more of a
Zero or more of a, ungreedy
One or more of a
One or more of a, ungreedy
Exactly 3 of a
3 or more of a
Up to 6 of a
3 to 6 of a
3 to 6 of a, ungreedy
Escape character
Any punctuation symbol
Any space character
Space or tab
h
g
H
G
i
s
12 Hour 4 (01 to 12)
12 Hour (1 to 12)
24 Hour 4 (00 to 23)
24 Hour (0 to 23)
Minutes 4 (00 to 59)
Seconds 4 (00 to 59)
String Functions
crypt (str, salt)
explode (sep, str)
implode (glue, arr)
nl2br (str)
sprintf (frmt, args)
strip_tags (str, allowed_tags)
str_replace (search, replace, str)
strpos (str, needle)
strrev (str)
strstr (str, needle)
strtolower (str)
strtoupper (str)
substr (string, start, len)
w
z
W
t
Day of week 1 (0 to 6)
Day of year (0 to 365)
Week of year 2 (1 to 53)
Days in month (28 to 31)
a
A
B
S
am or pm
AM or PM
Swatch Internet Time (000 to 999)
Ordinal Suffix (st, nd, rd, th)
Filesystem Functions
T
Z
O
I
L
Timezone of machine (GMT)
Timezone offset (seconds)
Difference to GMT (hours) (e.g., +0200)
Daylight saving (1 or 0)
Leap year (1 or 0)
clearstatcache ()
copy (source, dest)
fclose (handle)
fgets (handle, len)
file (file)
filemtime (file)
filesize (file)
file_exists (file)
fopen (file, mode)
fread (handle, len)
fwrite (handle, str)
readfile (file)
PCRE Modifiers
U
c
Seconds since Epoch 3
ISO 8601 (PHP 5)
2008-07-31T18:30:13+01:00
RFC 2822
Thu, 31 Jul 2008 18:30:13 +0100
i
s
m
U
e
x
Case-insensitive
Period matches newline
^ and $ match lines
Ungreedy matching
Evaluate replacement
Pattern over several lines
r
1.
0 is Sunday, 6 is Saturday.
2.
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 be 53 if
week belongs to previous year.
date("W", mktime(0, 0, 0, 12, 8,
$year)) always gives correct number of
weeks in $year .
Date and Time Functions
fopen() Modes
checkdate (month, day, year)
date (format, timestamp)
getdate (timestamp)
mktime (hr, min, sec, month, day, yr)
strftime (formatstring, timestamp)
strtotime (str)
time ()
r
r+
w
w+
a
a+
Read
Read and write, prepend
Write, truncate
Read and write, truncate
Write, append
Read and write, append
3.
The Epoch is the 1st January 1970.
Available free from AddedBytes.com
4.
With leading zeroes
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