Настройка во время выполнения

Поведение этих функций зависит от установок в php.ini.

Mail configuration options

Name	Default	Changeable	Changelog
mail.add_x_header	"0"	PHP_INI_ALL	Available since PHP 5.3.0.
mail.log	""	PHP_INI_ALL	Available since PHP 5.3.0.
SMTP	"localhost"	PHP_INI_ALL
smtp_port	"25"	PHP_INI_ALL	Available since PHP 4.3.0.
sendmail_from	NULL	PHP_INI_ALL
sendmail_path	"/usr/sbin/sendmail -t -i"	PHP_INI_SYSTEM

Для подробного описания констант PHP_INI_*, обратитесь к документации функции ini_set().

Краткое разъяснение конфигурационных директив.

mail.add_x_header bool

Add X-PHP-Originating-Script that will include UID of the script followed by the filename.

mail.log string

Log all mail() calls including the full path of the script, line number, To address and headers.

SMTP string

Used under Windows only: host name or IP address of the SMTP server PHP should use for mail sent with the mail() function.

smtp_port int

Used under Windows only: Number of the port to connect to the server specified with the SMTP setting when sending mail with mail(); defaults to 25. Only available since PHP 4.3.0.

sendmail_from string

Which "From:" mail address should be used in mail sent from PHP under Windows. This directive also sets the "Return-Path:" header.

sendmail_path string

Where the sendmail program can be found, usually /usr/sbin/sendmail or /usr/lib/sendmail. configure does an honest attempt of locating this one for you and set a default, but if it fails, you can set it here.

Systems not using sendmail should set this directive to the sendmail wrapper/replacement their mail system offers, if any. For example, » Qmail users can normally set it to /var/qmail/bin/sendmail or /var/qmail/bin/qmail-inject.

qmail-inject does not require any option to process mail correctly.

This directive works also under Windows. If set, smtp, smtp_port and sendmail_from are ignored and the specified command is executed.