(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0)
intl_is_failure — Check whether the given error code indicates failure
intl_is_failure ( int $error_code ) : bool
error_code
is a value that returned by functions: intl_get_error_code(), collator_get_error_code() .
true if it the code indicates some failure, and false in case of success or a warning.
Example #1 intl_is_failure() example
<?php
function check( $err_code )
{
var_export( intl_is_failure( $err_code ) );
echo "\n";
}
check( U_ZERO_ERROR );
check( U_USING_FALLBACK_WARNING );
check( U_ILLEGAL_ARGUMENT_ERROR );
?> The above example will output something similar to:
false false true
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https://www.php.net/manual/en/function.intl-is-failure.php