The intl_is_failure() function is an inbuilt function in PHP which is used to check whether the given error code indicates failure.
Syntax:
bool intl_is_failure( $error_code )
Parameters: This function accepts single parameter $error_code which is a value that returned by the functions intl_get_error_code(), collator_get_error_code().
Return Value: If the code indicates some failure then it returns True and in case of success or a warning it returns False.
Below programs illustrate the intl_is_failure() function in PHP:
Program 1:
<?php   // Function definition function check( $err_code ) {     var_export( intl_is_failure( $err_code ) );     echo "\n"; }   // Function call using error_code as parameter check( U_USING_FALLBACK_WARNING ); check( U_ILLEGAL_ARGUMENT_ERROR );   ?> |
Output:
false true
Program 2:
<?php   // Function definition function check( $err_code ) {     var_export( intl_is_failure( $err_code ) );     echo "\n"; }   // Declare an array which contains error_code $arr = array(     U_ZERO_ERROR,     U_ILLEGAL_ARGUMENT_ERROR,     U_USING_FALLBACK_WARNING, );   // Loop to call function foreach ($arr as $err) {                   // Check each element as     // code point data     check($err); }   ?> |
Output:
false true false
Reference: https://www.php.net/manual/en/function.intl-is-failure.php
