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A simple php mail function

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A simple php mail function

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PHP Mail Introduction

The mail() function allows you to send emails directly from a script.


Requirements

For the mail functions to be available, PHP requires an installed and working email system. The program to be used is defined by the configuration settings in the php.ini file.


Installation

The mail functions are part of the PHP core. There is no installation needed to use these functions.
With Development Best Practices with php


Runtime Configuration

The behavior of the mail functions is affected by settings in the php.ini file.

Mail configuration options:

Name Default Description Changeable
SMTP "localhost" Windows only: The DNS name or IP address of the SMTP server PHP_INI_ALL
smtp_port "25" Windows only: The SMTP port number. Available since PHP 4.3 PHP_INI_ALL
sendmail_from NULL Windows only: Specifies the "from" address to be used in email sent from PHP PHP_INI_ALL
sendmail_path NULL Unix systems only: Specifies where the sendmail program can be found (usually /usr/sbin/sendmail or /usr/lib/sendmail) PHP_INI_SYSTEM


PHP Mail Functions

PHP: indicates the earliest version of PHP that supports the function.

Function Description PHP
ezmlm_hash() Calculates the hash value needed by the EZMLM mailing list system 3
mail() Allows you to send emails directly from a script 3


PHP Math Introduction

The math functions can handle values within the range of integer and float types.


Installation

The math functions are part of the PHP core. There is no installation needed to use these functions.


PHP Math Functions

PHP: indicates the earliest version of PHP that supports the function.

Function Description PHP
abs() Returns the absolute value of a number 3
acos() Returns the arccosine of a number 3
acosh() Returns the inverse hyperbolic cosine of a number 4
asin() Returns the arcsine of a number 3
asinh() Returns the inverse hyperbolic sine of a number 4
atan() Returns the arctangent of a number as a numeric value between -PI/2 and PI/2 radians 3
atan2() Returns the angle theta of an (x,y) point as a numeric value between -PI and PI radians 3
atanh() Returns the inverse hyperbolic tangent of a number 4
base_convert() Converts a number from one base to another 3
bindec() Converts a binary number to a decimal number 3
ceil() Returns the value of a number rounded upwards to the nearest integer 3
cos() Returns the cosine of a number 3
cosh() Returns the hyperbolic cosine of a number 4
decbin() Converts a decimal number to a binary number 3
dechex() Converts a decimal number to a hexadecimal number 3
decoct() Converts a decimal number to an octal number 3
deg2rad() Converts a degree to a radian number 3
exp() Returns the value of Ex 3
expm1() Returns the value of Ex - 1 4
floor() Returns the value of a number rounded downwards to the nearest integer 3
fmod() Returns the remainder (modulo) of the division of the arguments 4

getrandmax()

Returns the maximum random number that can be returned by a call to the rand() function 3
hexdec() Converts a hexadecimal number to a decimal number 3
hypot() Returns the length of the hypotenuse of a right-angle triangle 4
is_finite() Returns true if a value is a finite number 4
is_infinite() Returns true if a value is an infinite number 4
is_nan() Returns true if a value is not a number 4
lcg_value() Returns a pseudo random number in the range of (0,1) 4
log() Returns the natural logarithm (base E) of a number 3
log10() Returns the base-10 logarithm of a number 3
log1p() Returns log(1+number) 4
max() Returns the number with the highest value of two specified numbers 3
min() Returns the number with the lowest value of two specified numbers 3
mt_getrandmax() Returns the largest possible value that can be returned by mt_rand() 3
mt_rand() Returns a random integer using Mersenne Twister algorithm 3
mt_srand() Seeds the Mersenne Twister random number generator 3
octdec() Converts an octal number to a decimal number 3
pi() Returns the value of PI 3
pow() Returns the value of x to the power of y 3
rad2deg() Converts a radian number to a degree 3
rand() Returns a random integer 3
round() Rounds a number to the nearest integer 3
sin() Returns the sine of a number 3
sinh() Returns the hyperbolic sine of a number 4
sqrt() Returns the square root of a number 3
srand() Seeds the random number generator 3
tan() Returns the tangent of an angle 3
tanh() Returns the hyperbolic tangent of an angle 4


PHP Math Constants

PHP: indicates the earliest version of PHP that supports the constant.

Constant Description PHP
M_E Returns e (approx. 2.718) 4
M_EULER Returns Euler's constant (approx. 0.577) 4
M_LNPI Returns the natural logarithm of PI (approx. 1.144) 4
M_LN2 Returns the natural logarithm of 2 (approx. 0.693) 4
M_LN10 Returns the natural logarithm of 10 (approx. 2.302) 4
M_LOG2E Returns the base-2 logarithm of E (approx. 1.442) 4
M_LOG10E Returns the base-10 logarithm of E (approx. 0.434) 4
M_PI Returns PI (approx. 3.14159) 3
M_PI_2 Returns PI/2 (approx. 1.570) 4
M_PI_4 Returns PI/4 (approx. 0.785) 4
M_1_PI Returns 1/PI (approx. 0.318) 4
M_2_PI Returns 2/PI (approx. 0.636) 4
M_SQRTPI Returns the square root of PI (approx. 1.772) 4
M_2_SQRTPI Returns 2/square root of PI (approx. 1.128) 4
M_SQRT1_2 Returns the square root of 1/2 (approx. 0.707) 4
M_SQRT2 Returns the square root of 2 (approx. 1.414) 4
M_SQRT3 Returns the square root of 3 (approx. 1.732) 4

PHP Miscellaneous Introduction

The misc. functions were only placed here because none of the other categories seemed to fit.


Installation

The misc functions are part of the PHP core. There is no installation needed to use these functions.


Runtime Configuration

The behavior of the misc functions is affected by settings in the php.ini file.

Misc. configuration options:

Name Default Description Changeable
ignore_user_abort "0" FALSE indicates that scripts will be terminated as soon as they try to output something after a client has aborted their connection PHP_INI_ALL
highlight.string "#DD0000" Color for highlighting a string in PHP syntax PHP_INI_ALL
highlight.comment "#FF8000" Color for highlighting PHP comments PHP_INI_ALL
highlight.keyword "#007700" Color for syntax highlighting PHP keywords (e.g. parenthesis and semicolon) PHP_INI_ALL
highlight.bg "#FFFFFF" Color for background PHP_INI_ALL
highlight.default "#0000BB" Default color for PHP syntax PHP_INI_ALL
highlight.html "#000000" Color for HTML code PHP_INI_ALL
browscap NULL Name and location of browser-capabilities file (e.g. browscap.ini) PHP_INI_SYSTEM


PHP Misc. Functions

PHP: indicates the earliest version of PHP that supports the function.

Function Description PHP
connection_aborted() Checks whether the client has disconnected 3
connection_status() Returns the current connection status 3
connection_timeout() Deprecated in PHP 4.0.5 3
constant() Returns the value of a constant 4
define() Defines a constant 3
defined() Checks whether a constant exists 3
die() Prints a message and exits the current script 3
eval() Evaluates a string as PHP code 3
exit() Prints a message and exits the current script 3
get_browser() Returns the capabilities of the user's browser 3
highlight_file() Outputs a file with the PHP syntax highlighted 4
highlight_string() Outputs a string with the PHP syntax highlighted 4
ignore_user_abort() Sets whether a remote client can abort the running of a script 3
pack() Packs data into a binary string 3
php_check_syntax() Deprecated in PHP 5.0.5 5
php_strip_whitespace() Returns the source code of a file with PHP comments and whitespace removed 5
show_source() Alias of highlight_file() 4
sleep() Delays code execution for a number of seconds 3
time_nanosleep() Delays code execution for a number of seconds and nanoseconds 5
time_sleep_until() Delays code execution until a specified time 5
uniqid() Generates a unique ID 3
unpack() Unpacks data from a binary string 3
usleep() Delays code execution for a number of microseconds 3


PHP Misc. Constants

PHP: indicates the earliest version of PHP that supports the constant.

Constant Description PHP
CONNECTION_ABORTED
CONNECTION_NORMAL
CONNECTION_TIMEOUT
__COMPILER_HALT_OFFSET__ 5
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Published at DZone with permission of Henkz Sall. See the original article here.

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