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PHP Function trigger_error()
Syntax
bool trigger_error ( string $error_msg [, int $error_type] );
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Definition and Usage
This function is used to trigger a user error condition, it can be used by in conjunction with the built-in error handler, or with a user defined function that has been set as the new error handler (set_error_handler()).
Paramters
Parameter | Description |
error_msg | Required. Specifies the error message. Limited to 1024 characters in length. |
error_types | Optional. Specifies the error type for this error message.
Possible error types:
- E_USER_ERROR - Fatal user-generated run-time error. Errors that can
not be recovered from. Execution of the script is halted
- E_USER_WARNING - Non-fatal user-generated run-time warning.
Execution of the script is not halted
- E_USER_NOTICE - Default. User-generated run-time notice. The script found
something that might be an error, but could also happen when running a
script normally
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Return Value
This function returns FALSE if wrong error_type is specified, TRUE otherwise.
Example
Following is the usage of this function:
<?php
if (assert($divisor == 0)) {
trigger_error("Cannot divide by zero :\n", E_USER_ERROR);
}
?>
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This will produce following result:
Fatal error: Cannot divide by zero :
in /var/www/tutorialspoint/php/test.php on line 3
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