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PHP Cheat Sheet by DaveChild

A quick reference guide for PHP, with functions references, a regular expression syntax guide and a reference for PHP's date formating functions. As of 28/6/14, the cheat sheet now includes popup links to the appropriate PHP manual pages.

 

Regular Expres­sions Syntax

^
Start of string
$
End of string
.
Any single character
(a|b)
a or b
(...)
Group section
[abc]
In range (a, b or c)
[^abc]
Not in range
\s
White space
a?
Zero or one of a
a*
Zero or more of a
a*?
Zero or more, ungreedy
a+
One or more of a
a+?
One or more, ungreedy
a{3}
Exactly 3 of a
a{3,}
3 or more of a
a{,6}
Up to 6 of a
a{3,6}
3 to 6 of a
a{3,6}?
3 to 6 of a, ungreedy
\
Escape character
[:punct:]
Any punctu­ation symbol
[:space:]
Any space character
[:blank:]
Space or tab
There's an excellent regular expression tester at: http:/­/re­gex­pal.com/

Pattern Modifiers

g
Global match
i *
Case-i­nse­nsitive
m *
Multiple lines
s *
Treat string as single line
x *
Allow comments and whitespace in pattern
e *
Evaluate replac­ement
U *
Ungreedy pattern
* PCRE modifier
 

PHP fopen() Modes

r
Read
r+
Read and write, prepend
w
Write, truncate
w+
Read and write, truncate
a
Write, append
a+
Read and write, append

PHP Date Formatting

Y
4 digit year (2008)
y
2 digit year (08)
F
Long month (January)
M
Short month (Jan)
m
Month ⁴ (01 to 12)
n
Month (1 to 12)
D
Short day name (Mon)
l
Long day name (Monday) (lowercase L)
d
Day ⁴ (01 to 31)
j
Day (1 to 31)
 
h
12 Hour ⁴ (01 to 12)
g
12 Hour (1 to 12)
H
24 Hour ⁴ (00 to 23)
G
24 Hour (0 to 23)
i
Minutes ⁴ (00 to 59)
s
Seconds ⁴ (00 to 59)
 
w
Day of week ¹ (0 to 6)
z
Day of year (0 to 365)
W
Week of year ² (1 to 53)
t
Days in month (28 to 31)
 
a
am or pm
A
AM or PM
B
Swatch Internet Time (000 to 999)
S
Ordinal Suffix (st, nd, rd, th)
 
T
Timezone of machine (GMT)
Z
Timezone offset (seconds)
O
GMT offset (hours) (+0200)
I
Daylight saving (1 or 0)
L
Leap year (1 or 0)
 
U
Seconds since Epoch ³
c
ISO 8601 (PHP 5) (2008-­07-­31T­18:­30:­13+­01:00)
r
RFC 2822 (Thu, 31 Jul 2008 18:30:13 +0100)
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.
³ The Epoch is the 1st January 1970.
⁴ With leading zeroes
 

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Comments

localwebdesign localwebdesign, 10:02 28 Nov 11

Dave,

Thanks for adding these. They rock! the mysql and php ones are my faves. Found your site by searching for a SQL Server cheatsheet.

all of them are great!

Now to dream up one of my own to share. ;0)

Anan Anan, 12:17 7 Dec 11

Hi Dave!
I recently started learning html,php,mysql and I found your cheatsheets very helpful and also the four security lessons on Php scripting(addedbytes).

thanks alot,
with bllesings from aboce

Anan

alan alan, 07:46 5 Jan 12

this is better, got some ajax accordion function for clicking

Fishtankalpha Fishtankalpha, 13:11 5 Jan 12

There is a lot missing.

DaveChild DaveChild, 13:12 5 Jan 12

Well, yes. It's a quick reference, not a manual :).

xcession xcession, 18:23 14 Mar 12

Nice Thanks :)
btw, can you make it a bit more compact? because table break into separated page when download as PDF.

Isaac Isaac, 13:28 14 May 12

What good is this cheat sheet? It has function names and no descriptions or examples?

Is this a wordpress website? WTF!

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