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)
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