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PHP Mail Function


Introduction to PHP Mail

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


Requirements

For the mail function to be available, PHP needs to have a mail system installed and running. 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. No installation is required to use these functions.


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 in emails sent by PHP. PHP_INI_ALL
sendmail_path NULL Unix only: Specifies the path to the sendmail program (usually /usr/sbin/sendmail or /usr/lib/sendmail). PHP_INI_SYSTEM

PHP Mail Functions

PHP: Indicates the earliest PHP version that supports the function.

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

PHP Mail Constants

None.

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