THE WORLD'S LARGEST WEB DEVELOPER SITE

PHP7 Tutorial

PHP7 HOME PHP7 Intro PHP7 Install PHP7 Syntax PHP7 Variables PHP7 Echo / Print PHP7 Data Types PHP7 Strings PHP7 Constants PHP7 Operators PHP7 If...Else...Elseif PHP7 Switch PHP7 While Loops PHP7 For Loops PHP7 Functions PHP7 Arrays PHP7 Sorting Arrays PHP7 Superglobals

PHP7 Forms

PHP7 Form Handling PHP7 Form Validation PHP7 Form Required PHP7 Form URL/E-mail PHP7 Form Complete

PHP7 Advanced

PHP7 Arrays Multi PHP7 Date and Time PHP7 Include PHP7 File Handling PHP7 File Open/Read PHP7 File Create/Write PHP7 File Upload PHP7 Cookies PHP7 Sessions PHP7 Filters PHP7 Filters Advanced

MySQL Database

MySQL Database MySQL Connect MySQL Create DB MySQL Create Table MySQL Insert Data MySQL Get Last ID MySQL Insert Multiple MySQL Prepared MySQL Select Data MySQL Delete Data MySQL Update Data MySQL Limit Data

PHP7 XML

PHP7 XML Parsers PHP7 SimpleXML Parser PHP7 SimpleXML - Get PHP7 XML Expat PHP7 XML DOM

PHP7 - AJAX

AJAX Intro AJAX PHP AJAX Database AJAX XML AJAX Live Search AJAX Poll

PHP7 Reference

PHP7 Overview PHP7 Array PHP7 Calendar PHP7 Date PHP7 Directory PHP7 Error PHP7 Filesystem PHP7 Filter PHP7 FTP PHP7 Libxml PHP7 Mail PHP7 Math PHP7 Misc PHP7 MySQLi PHP7 Network PHP7 SimpleXML PHP7 Stream PHP7 String PHP7 XML Parser PHP7 Zip PHP7 Timezones

PHP 7 error_log() Function

PHP Error Reference

Example

Send error messages to the web server's error log and to a mail account:

<?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, "admin@example.com");
}
?>


Definition and Usage

The error_log() function sends an error message to a log, to a file, or to a mail account.


Syntax

error_log(message, type, destination, headers);
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

PHP Error Reference