What is the trigger error function in PHP?

Question

Is it okay to use the trigger_error function when the site is live?

Example below.

// Make the connection:
$dbc = @mysqli_connect (DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);

if (!$dbc) {
    trigger_error ('Could not connect to MySQL: ' . mysqli_connect_error() );
}

Michael Berkowski · Accepted Answer · 2011-07-07 01:22:50Z

5

As long as you are not displaying errors on screen (display_errors = Off) in php.ini, it is wise to use trigger_error() in your script. It will cause an error message to be written to the error log.

I will add that it is generally not good practice to use the @ for error suppression. Problems with mysqli_connect() will be written to the error log as well, if you leave off the @.

answered Jul 7, 2011 at 1:22

Michael Berkowski

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2 Comments

Itay Moav -Malimovka Over a year ago

Wouldn't you say a try-catch is more appropriate for this type of error?

user149341 Over a year ago

PHP errors aren't exceptions -- they're something separate. It's a bit of a wart in the language.

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