PHP Manual
runkit 函数
Determines if the current functions return value will be used

runkit_return_value_used

(PECL runkit >= 0.8.0)

runkit_return_value_used — Determines if the current functions return value will be used

说明

runkit_return_value_used ( void ) : bool

返回值

Returns TRUE if the function's return value is used by the calling scope, otherwise FALSE

范例

Example #1 runkit_return_value_used() example

 <?php
function foo() {
  var_dump(runkit_return_value_used());
}

foo();
$f = foo();
?>

以上例程会输出：

bool(false)
bool(true)

相关文章

php hashable returns a scalar value to be used as a hash value php cubrid mysql 兼容性函数 return the current cubrid connection charset php cubrid mysql 兼容性函数 return the numerical value of the error message from previous cubrid operation php cubrid mysql 兼容性函数 return the value of a specific field in a specific row php enchant 函数 will return a list of values if any of those pre conditions are not met php ingres 函数 get the return value from a procedure call php ncurses 函数 checks if terminal color definitions can be changed php posix 函数 return the effective group id of the current process php posix 函数 return the real user id of the current process php runkit 函数 determines if the current functions return value will be used php snmp 函数 return the method how the snmp values will be returned php snmp 函数 return all values that are enums with their enum value instead of the raw integer php svn 函数 creates and returns a stream that will be used to replace php svn 函数 deletes a file or a directory return true if all is ok false otherwise php uopz 函数 provide a return value for an existing function php win32service 函数 define or return the exit code for the current running service php xml rpc 函数 determines if an array value represents an xmlrpc fault php solrquery returns if a field will only be highlighted if the query matched in this particular field php solrquery set if the query will be boosted by the interesting term relevance php swoole mmap map a file into memory and return the stream resource which can be used by php stream operations.

关注编程学问公众号