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Cheatography

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.

PHP Array Functions

PHP String Functions

PHP Filesystem Functions

PHP Date and Time Functions

 

PHP Regular Expres­sions Functions

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
               
 

Metadata

  • Languages:
  • Published: 19th October, 2011
  • Last Updated: 29th February, 2020
  • Rated: 5 stars based on 91 ratings

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Comments

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)

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

this is better, got some ajax accordion function for clicking

There is a lot missing.

DaveChild DaveChild, 13:12 5 Jan 12

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

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

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

Is this a wordpress website? WTF!

Thank you...

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