ReflectionGenerator::getTrace()

版本：php7

(PHP 7)

Gets the trace of the executing generator

说明

publicReflectionGenerator::getTrace([int $options= DEBUG_BACKTRACE_PROVIDE_OBJECT] ): array

Get the trace of the currently executing generator.

参数

$options

The value of$optionscan be any of the following flags.

Available options

Option	Description
DEBUG_BACKTRACE_PROVIDE_OBJECT	Default.
DEBUG_BACKTRACE_IGNORE_ARGS	Don't include the argument information for functions in the stack trace.

返回值

Returns the trace of the currently executing generator.

范例

Example #1ReflectionGenerator::getTrace()example

<?php
function foo() {
    yield 1;
}
function bar()
{
    yield from foo();
}
function baz()
{
    yield from bar();
}
$gen = baz();
$gen->valid(); // start the generator
var_dump((new ReflectionGenerator($gen))->getTrace());

以上例程的输出类似于：

array(2) {
  [0]=>
  array(4) {
    ["file"]=>
    string(18) "example.php"
    ["line"]=>
    int(8)
    ["function"]=>
    string(3) "foo"
    ["args"]=>
    array(0) {
    }
  }
  [1]=>
  array(4) {
    ["file"]=>
    string(18) "example.php"
    ["line"]=>
    int(12)
    ["function"]=>
    string(3) "bar"
    ["args"]=>
    array(0) {
    }
  }
}

参见

• ReflectionGenerator::getFunction() Gets the function name of the generator
• ReflectionGenerator::getThis() Gets the $this value of the generator