Example
Send error messages to the web server's error log and to a mail account:
html
<?php
// Send error message to the server log if error connecting to the database
if (!mysqli_connect("localhost","bad_user","bad_password","my_db")) {
error_log("Failed to connect to database!", 0);
}
// Send email to administrator if we run out of FOO
if (!($foo = allocate_new_foo())) {
error_log("Oh no! We are out of FOOs!", 1, "[email protected]");
}
?>
Definition and Usage
The error_log() function sends an error message to a log, to a file, or to a mail account.
Syntax
text
error_log(message, type, destination, headers);
Parameter Values
| Parameter | Description |
|---|---|
| message | Required. Specifies the error message to log |
| type | Optional. Specifies where the error message should go. Possible values: 0 - Default. Message is sent to PHP's system logger, using the OS' system logging mechanism or a file, depending on what the error_log configuration is set to in php.ini 1 - Message is sent by email to the address in the destination parameter 2 - No longer in use (only available in PHP 3) 3 - Message is appended to the file specified in destination 4 - Message is sent directly to the SAPI logging handler |
| destination | Optional. Specifies the destination of the error message. This value depends on the value of the type parameter |
| headers | Optional. Only used if the type parameter is set to 1. Specifies additional headers, like From, Cc, and Bcc. Multiple headers should be separated with a CRLF (\r\n) |
Technical Details
| Return Value: | TRUE on success. FALSE on failure |
|---|---|
| PHP Version: | 4.0+ |
| Binary Safe: | No |
| PHP Changelog: | PHP 5.2.7: The value of 4 was added to the type parameter |