Section 1
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array_uintersect_assoc()
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Section 1
(50 cards)
array_uintersect_assoc()
Compares array keys, and compares array values in a user-made function, and returns an array
array_udiff()
Compares array values in a user-made function and returns an array
array_merge_recursive()
Merges one or more arrays into one array
array_values()
Returns all the values of an array
array_flip()
Exchanges all keys with their associated values in an array
array_map()
Sends each value of an array to a user-made function, which returns new values
array_walk()
Applies a user function to every member of an array
array_intersect_key()
Compares array keys, and returns the matches
array_diff_ukey()
Compares array keys, with an additional user-made function check, and returns the differences
array_fill()
Fills an array with values
array_uintersect_uassoc()
Compares array keys and array values in user-made functions, and returns an array
array_udiff_assoc()
Compares array keys, and compares array values in a user-made function, and returns an array
array_walk_recursive()
Applies a user function recursively to every member of an array
array_reverse()
Returns an array in the reverse order
array_merge()
Merges one or more arrays into one array
compact()
Create array containing variables and their values
array_sum()
Returns the sum of the values in an array
array_udiff_uassoc()
Compares array keys and array values in user-made functions, and returns an array
array_search()
Searches an array for a given value and returns the key
array_multisort()
Sorts multiple or multi-dimensional arrays
array_diff_uassoc()
Compares array keys and values, with an additional user-made function check, and returns the differences
array_keys()
Returns all the keys of an array
array_reduce()
Returns an array as a string, using a user-defined function
array_intersect()
Compares array values, and returns the matches
arsort()
Sorts an array in reverse order and maintain index association
array_unique()
Removes duplicate values from an array
array_count_values()
Returns an array with the number of occurrences for each value
array_filter()
Filters elements of an array using a user-made function
array_diff()
Compares array values, and returns the differences
array_chunk()
Splits an array into chunks of arrays
array_slice()
Returns selected parts of an array
array_product()
Calculates the product of the values in an array
array()
Creates an array
array_pad()
Inserts a specified number of items, with a specified value, to an array
array_diff_key()
Compares array keys, and returns the differences
array_key_exists()
Checks if the specified key exists in the array
array_intersect_assoc()
Compares array keys and values, and returns the matches
array_uintersect()
Compares array values in a user-made function and returns an array
array_combine()
Creates an array by using one array for keys and another for its values
array_rand()
Returns one or more random keys from an array
array_unshift()
Adds one or more elements to the beginning of an array
array_intersect_uassoc()
Compares array keys and values, with an additional user-made function check, and returns the matches
array_intersect_ukey()
Compares array keys, with an additional user-made function check, and returns the matches
array_pop()
Deletes the last element of an array
array_push()
Inserts one or more elements to the end of an array
array_change_key_case()
Returns an array with all keys in lowercase or uppercase
array_shift()
Removes the first element from an array, and returns the value of the removed element
array_diff_assoc()
Compares array keys and values, and returns the differences
array_splice()
Removes and replaces specified elements of an array
asort()
Sorts an array and maintain index association
Section 2
(50 cards)
sizeof()
Alias of count()
reset()
Sets the internal pointer of an array to its first element
sort()
Sorts an array
shuffle()
Shuffles an array
rsort()
Sorts an array in reverse order
JDToJulian()
Converts a Julian day count to a Julian date
end()
Sets the internal pointer of an array to its last element
list()
Assigns variables as if they were an array
date_sunrise()
Returns the time of sunrise for a given day / location
unixtojd()
Converts a Unix timestamp to a Julian day count
cal_days_in_month()
Returns the number of days in a month for a specified year and calendar
usort()
Sorts an array by values using a user-defined function
JulianToJD()
Converts a Julian date to a Julian day count
easter_date()
Returns the Unix timestamp for midnight on Easter of a specified year
range()
Creates an array containing a range of elements
jdtojewish()
Converts a Julian day count to a Jewish date
JDMonthName()
Returns a month name
GregorianToJD()
Converts a Gregorian date to a Julian day count
key()
Fetches a key from an array
natsort()
Sorts an array using a "natural order" algorithm
uksort()
Sorts an array by keys using a user-defined function
cal_to_jd()
Converts a date to Julian day count
easter_days()
Returns the number of days after March 21, on which Easter falls for a specified year
date_default_timezone_set()
Sets the default time zone
getdate()
Returns an array that contains date and time information for a Unix timestamp
extract()
Imports variables into the current symbol table from an array
FrenchToJD()
Converts a French Republican date to a Julian day count
JDToFrench()
Converts a Julian day count to a French Republican date
pos()
Alias of current()
uasort()
Sorts an array with a user-defined function and maintain index association
in_array()
Checks if a specified value exists in an array
count()
Counts elements in an array, or properties in an object
date()
Formats a local time/date
ksort()
Sorts an array by key
each()
Returns the current key and value pair from an array
cal_from_jd()
Converts a Julian day count into a date of a specified calendar
krsort()
Sorts an array by key in reverse order
cal_info()
Returns information about a given calendar
jdtounix()
Converts a Julian day count to a Unix timestamp
JewishToJD()
Converts a Jewish date to a Julian day count
JDDayOfWeek()
Returns the day of a week
gettimeofday()
Returns an array that contains current time information
JDToGregorian()
Converts a Julian day count to a Gregorian date
current()
Returns the current element in an array
natcasesort()
Sorts an array using a case insensitive "natural order" algorithm
next()
Advance the internal array pointer of an array
checkdate()
Validates a Gregorian date
date_sunset()
Returns the time of sunset for a given day / location
date_default_timezone_get()
Returns the default time zone
prev()
Rewinds the internal array pointer
Section 3
(50 cards)
strptime()
Parses a time/date generated with strftime()
set_exception_handler()
Sets a user-defined function to handle exceptions
debug_print_backtrace()
Prints a backtrace
dir()
Opens a directory handle and returns an object
chdir()
Changes the current directory
microtime()
Returns the microseconds for the current time
fgetc()
Returns a character from an open file
chown()
Changes the file owner
getcwd()
Returns the current directory
fgets()
Returns a line from an open file
fgetcsv()
Parses a line from an open file, checking for CSV fields
gmstrftime()
Formats a GMT/UTC time/date according to locale settings
disk_total_space()
Returns the total size of a directory
fgetss()
Returns a line, with HTML and PHP tags removed, from an open file
rewinddir()
Resets a directory handle
gmdate()
Formats a GMT/UTC date/time
clearstatcache()
Clears the file status cache
strtotime()
Parses an English textual date or time into a Unix timestamp
strftime()
Formats a local time/date according to locale settings
basename()
Returns the filename component of a path
fclose()
Closes an open file
set_error_handler()
Sets a user-defined function to handle errors
fflush()
Flushes buffered output to an open file
feof()
Tests for end-of-file on an open file
mktime()
Returns the Unix timestamp for a date
time()
Returns the current time as a Unix timestamp
chroot()
Changes the root directory of the current process
chmod()
Changes the file mode
error_reporting()
Specifies which errors are reported
dirname()
Returns the directory name component of a path
readdir()
Returns an entry from a directory handle
trigger_error()
Creates a user-defined error message
restore_error_handler()
Restores the previous error handler
debug_backtrace()
Generates a backtrace
copy()
Copies a file
user_error()
Alias of trigger_error()
disk_free_space()
Returns the free space of a directory
restore_exception_handler()
Restores the previous exception handler
gmmktime()
Returns the Unix timestamp for a GMT date
idate()
Formats a local time/date as integer
scandir()
Lists files and directories inside a specified path
file()
Reads a file into an array
error_log()
Sends an error to the server error-log, to a file or to a remote destination
error_get_last()
Gets the last error occurred
delete()
See unlink() or unset()
opendir()
Opens a directory handle
closedir()
Closes a directory handle
diskfreespace()
Alias of disk_free_space()
chgrp()
Changes the file group
localtime()
Returns an array that contains the time components of a Unix timestamp
Section 4
(50 cards)
fwrite()
Writes to an open file
realpath()
Returns the absolute pathname
move_uploaded_file()
Moves an uploaded file to a new location
linkinfo()
Returns information about a hard link
ftruncate()
Truncates an open file to a specified length
fseek()
Seeks in an open file
fileowner()
Returns the user ID (owner) of a file
fstat()
Returns information about an open file
is_writeable()
Alias of is_writable()
is_uploaded_file()
Checks whether a file was uploaded via HTTP POST
fread()
Reads from an open file
fileatime()
Returns the last access time of a file
is_executable()
Checks whether a file is executable
readfile()
Reads a file and writes it to the output buffer
parse_ini_file()
Parses a configuration file
fpassthru()
Reads from an open file, until EOF, and writes the result to the output buffer
readlink()
Returns the target of a symbolic link
lstat()
Returns information about a file or symbolic link
file_put_contents
Writes a string to a file
fputs()
Alias of fwrite()
fileinode()
Returns the inode number of a file
ftell()
Returns the current position in an open file
link()
Creates a hard link
popen()
Opens a pipe
flock()
Locks or releases a file
is_file()
Checks whether a file is a regular file
file_get_contents()
Reads a file into a string
fopen()
Opens a file or URL
rewind()
Rewinds a file pointer
fscanf()
Parses input from an open file according to a specified format
filegroup()
Returns the group ID of a file
is_writable()
Checks whether a file is writeable
fputcsv()
Formats a line as CSV and writes it to an open file
pclose()
Closes a pipe opened by popen()
fnmatch()
Matches a filename or string against a specified pattern
filemtime()
Returns the last modification time of a file
is_link()
Checks whether a file is a link
rename()
Renames a file or directory
rmdir()
Removes an empty directory
filetype()
Returns the file type
is_dir()
Checks whether a file is a directory
mkdir()
Creates a directory
is_readable()
Checks whether a file is readable
filesize()
Returns the file size
pathinfo()
Returns information about a file path
filectime()
Returns the last change time of a file
glob()
Returns an array of filenames / directories matching a specified pattern
file_exists()
Checks whether or not a file or directory exists
set_file_buffer()
Sets the buffer size of an open file
fileperms()
Returns the permissions of a file
Section 5
(50 cards)
FILTER_VALIDATE_REGEXP
Validate value against regexp, a Perl-compatible regular expression
FILTER_SANITIZE_URL
Remove all characters, except letters, digits and $-_.+!*'(),{}|\\^~[]`<>#%";/?:@&=
ftp_nb_continue()
Continues retrieving/sending a file (non-blocking)
ftp_chdir()
Changes the current directory on the FTP server
ftp_mkdir()
Creates a new directory on the FTP server
FILTER_UNSAFE_RAW
Do nothing, optionally strip or encode special characters
stat()
Returns information about a file
FILTER_VALIDATE_URL
Validate value as URL, optionally with required components
ftp_nb_fget()
Downloads a file from the FTP server and saves it to an open file (non-blocking)
FILTER_VALIDATE_INT
Validate value as integer, optionally from the specified range
FILTER_SANITIZE_STRIPPED
Alias of "string" filter
FILTER_SANITIZE_NUMBER_INT
Remove all characters, except digits and +-
FILTER_VALIDATE_IP
Validate value as IP address, optionally only IPv or IPv6 or not from private or reserved ranges
symlink()
Creates a symbolic link
ftp_get_option()
Returns runtime behaviors of the FTP connection
FILTER_SANITIZE_EMAIL
Remove all characters, except letters, digits and !#$%&'*+-/=?^_`{|}~@.[]
FILTER_VALIDATE_BOOLEAN
Return TRUE for "1", "true", "on" and "yes", FALSE for "0", "false", "off", "no", and "", NULL otherwise
filter_var()
Get a variable and filter it
filter_id()
Returns the ID number of a specified filter
ftp_mdtm()
Returns the last modified time of a specified file
filter_var_array()
Get multiple variables and filter them
ftp_delete()
Deletes a file on the FTP server
ftp_fget()
Downloads a file from the FTP server and saves it to an open file
umask()
Changes file permissions for files
ftp_cdup()
Changes the current directory to the parent directory on the FTP server
FILTER_CALLBACK
Call a user-defined function to filter data
filter_input_array()
Get multiple inputs from outside the script and filters them
ftp_nb_fput()
Uploads from an open file and saves it to a file on the FTP server (non-blocking)
ftp_alloc()
Allocates space for a file to be uploaded to the FTP server
ftp_get()
Downloads a file from the FTP server
filter_has_var()
Checks if a variable of a specified input type exist
ftp_fput()
Uploads from an open file and saves it to a file on the FTP server
tmpfile()
Creates a unique temporary file
FILTER_SANITIZE_NUMBER_FLOAT
Remove all characters, except digits, +- and optionally .,eE
FILTER_SANITIZE_STRING
Strip tags, optionally strip or encode special characters
filter_input()
Get input from outside the script and filter it
tempnam()
Creates a unique temporary file
ftp_login()
Logs on to an FTP connection
FILTER_SANITIZE_SPECIAL_CHARS
HTML-escape '"<>& and characters with ASCII value less than 2
touch()
Sets access and modification time of a file
ftp_exec()
Executes a program/command on the FTP server
filter_list()
Returns an array of all supported filters
unlink()
Deletes a file
FILTER_VALIDATE_EMAIL
Validate value as e-mail
FILTER_SANITIZE_MAGIC_QUOTES
Apply addslashes()
ftp_close()
Closes an FTP connection
FILTER_VALIDATE_FLOAT
Validate value as float
ftp_chmod()
Sets permissions on a file via FTP
ftp_connect()
Opens an FTP connection
FILTER_SANITIZE_ENCODED
URL-encode string, optionally strip or encode special characters
Section 6
(50 cards)
hexdec()
Converts a hexadecimal number to a decimal number
ftp_set_option()
Sets runtime options for the FTP connection
ceil()
Returns the value of a number rounded upwards to the nearest integer
ftp_raw()
Sends a raw command to the FTP server
ftp_pwd()
Returns the current directory name
atan2()
Returns the angle theta of an (x,y) point as a numeric value between -PI and PI radians
ftp_rename()
Renames a file or directory on the FTP server
atan()
Returns the arctangent of a number as a numeric value between -PI/2 and PI/2 radians
exp()
Returns the value of Ex
ftp_put()
Uploads a file to the FTP server
setcookie()
Sends an HTTP cookie to a client
is_nan()
Returns true if a value is not a number
acosh()
Returns the inverse hyperbolic cosine of a number
dechex()
Converts a decimal number to a hexadecimal number
cosh()
Returns the hyperbolic cosine of a number
header()
Sends a raw HTTP header to a client
base_convert()
Converts a number from one base to another
mail()
Allows you to send emails directly from a script
getrandmax()
Returns the maximum random number that can be returned by a call to the rand() function
ftp_ssl_connect()
Opens a secure SSL-FTP connection
bindec()
Converts a binary number to a decimal number
deg2rad()
Converts a degree to a radian number
atanh()
Returns the inverse hyperbolic tangent of a number
ftp_nb_get()
Downloads a file from the FTP server (non-blocking)
ftp_systype()
Returns the system type identifier of the FTP server
ftp_nb_put()
Uploads a file to the FTP server (non-blocking)
is_finite()
Returns true if a value is a finite number
asin()
Returns the arcsine of a number
decbin()
Converts a decimal number to a binary number
is_infinite()
Returns true if a value is an infinite number
ftp_size()
Returns the size of the specified file
headers_list()
Returns a list of response headers sent (or ready to send)
ftp_nlist()
Lists the files in a specified directory on the FTP server
asinh()
Returns the inverse hyperbolic sine of a number
headers_sent()
Checks if / where the HTTP headers have been sent
acos()
Returns the arccosine of a number
fmod()
Returns the remainder (modulo) of the division of the arguments
ftp_rmdir()
Removes a directory on the FTP server
abs()
Returns the absolute value of a number
setrawcookie()
Sends an HTTP cookie without URL encoding the cookie value
lcg_value()
Returns a pseudo random number in the range of (0,1)
ftp_rawlist()
Returns a detailed list of files in the specified directory
expm1()
Returns the value of Ex - 1
floor()
Returns the value of a number rounded downwards to the nearest integer
ftp_site()
Sends a SITE command to the server
hypot()
Returns the length of the hypotenuse of a right-angle triangle
ftp_pasv()
Turns passive mode on or off
ftp_quit()
Alias of ftp_close()
decoct()
Converts a decimal number to an octal number
cos()
Returns the cosine of a number
Section 7
(50 cards)
pow()
Returns the value of x to the power of y
connection_aborted()
Checks whether the client has disconnected
tanh()
Returns the hyperbolic tangent of an angle
srand()
Seeds the random number generator
pack()
Packs data into a binary string
mt_srand()
Seeds the Mersenne Twister random number generator
defined()
Checks whether a constant exists
exit()
Prints a message and exits the current script
rand()
Returns a random integer
usleep()
Delays code execution for a number of microseconds
octdec()
Converts an octal number to a decimal number
chr()
Returns a character from a specified ASCII value
sinh()
Returns the hyperbolic sine of a number
uniqid()
Generates a unique ID
tan()
Returns the tangent of an angle
min()
Returns the number with the lowest value of two specified numbers
log10()
Returns the base-10 logarithm of a number
max()
Returns the number with the highest value of two specified numbers
bin2hex()
Converts a string of ASCII characters to hexadecimal values
show_source()
Alias of highlight_file()
addcslashes()
Returns a string with backslashes in front of the specified characters
get_browser()
Returns the capabilities of the user's browser
connection_timeout()
Deprecated in PHP .0.
time_nanosleep()
Delays code execution for a number of seconds and nanoseconds
php_strip_whitespace()
Returns the source code of a file with PHP comments and whitespace removed
define()
Defines a constant
connection_status()
Returns the current connection status
log1p()
Returns log(1+number)
sqrt()
Returns the square root of a number
highlight_string()
Outputs a string with the PHP syntax highlighted
chop()
Alias of rtrim()
die()
Prints a message and exits the current script
convert_cyr_string()
Converts a string from one Cyrillic character-set to another
php_check_syntax()
Deprecated in PHP .0.
mt_rand()
Returns a random integer using Mersenne Twister algorithm
addslashes()
Returns a string with backslashes in front of predefined characters
eval()
Evaluates a string as PHP code
rad2deg()
Converts a radian number to a degree
unpack()
Unpacks data from a binary string
log()
Returns the natural logarithm (base E) of a number
sin()
Returns the sine of a number
constant()
Returns the value of a constant
mt_getrandmax()
Returns the largest possible value that can be returned by mt_rand()
time_sleep_until()
Delays code execution until a specified time
round()
Rounds a number to the nearest integer
ignore_user_abort()
Sets whether a remote client can abort the running of a script
chunk_split()
Splits a string into a series of smaller parts
highlight_file()
Outputs a file with the PHP syntax highlighted
pi()
Returns the value of PI
sleep()
Delays code execution for a number of seconds
Section 8
(50 cards)
sha1_file()
Calculates the SHA-1 hash of a file
html_entity_decode()
Converts HTML entities to characters
htmlentities()
Converts characters to HTML entities
ord()
Returns the ASCII value of the first character of a string
str_pad()
Pads a string to a new length
quotemeta()
Quotes meta characters
hebrev()
Converts Hebrew text to visual text
echo()
Outputs strings
str_split()
Splits a string into an array
sprintf()
Writes a formatted string to a variable
explode()
Breaks a string into an array
similar_text()
Calculates the similarity between two strings
crc2()
Calculates a 2-bit CRC for a string
levenshtein()
Returns the Levenshtein distance between two strings
quoted_printable_decode()
Decodes a quoted-printable string
sscanf()
Parses input from a string according to a format
md()
Calculates the MD hash of a string
rtrim()
Strips whitespace from the right side of a string
money_format()
Returns a string formatted as a currency string
soundex()
Calculates the soundex key of a string
crypt()
One-way string encryption (hashing)
localeconv()
Returns locale numeric and monetary formatting information
htmlspecialchars_decode()
Converts some predefined HTML entities to characters
number_format()
Formats a number with grouped thousands
parse_str()
Parses a query string into variables
str_word_count()
Count the number of words in a string
convert_uuencode()
Encodes a string using the uuencode algorithm
sha1()
Calculates the SHA-1 hash of a string
setlocale()
Sets locale information
nl_langinfo()
Returns specific local information
str_ireplace()
Replaces some characters in a string (case-insensitive)
str_rot1()
Performs the ROT1 encoding on a string
ltrim()
Strips whitespace from the left side of a string
nl2br()
Inserts HTML line breaks in front of each newline in a string
hebrevc()
Converts Hebrew text to visual text and new lines (
) into <br />
str_shuffle()
Randomly shuffles all characters in a string
str_replace()
Replaces some characters in a string (case-sensitive)
join()
Alias of implode()
str_repeat()
Repeats a string a specified number of times
htmlspecialchars()
Converts some predefined characters to HTML entities
print()
Outputs a string
strcasecmp()
Compares two strings (case-insensitive)
fprintf()
Writes a formatted string to a specified output stream
printf()
Outputs a formatted string
implode()
Returns a string from the elements of an array
md_file()
Calculates the MD hash of a file
get_html_translation_table()
Returns the translation table used by htmlspecialchars() and htmlentities()
count_chars()
Returns how many times an ASCII character occurs within a string and returns the information
convert_uudecode()
Decodes a uuencoded string
metaphone()
Calculates the metaphone key of a string
Section 9
(47 cards)