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<?php function foo() { $foo = (yield 'strlen' => ['a']); $foo .= (yield 'strlen' => ['ab']); $foo .= (yield 'strlen' => ['abc']); yield $foo."final"; } function call_generator_function($g) { $args = $g->current(); $callable = $g->key(); while ($g->valid() && is_callable($callable)) { $return = call_user_func_array($callable, $args); $g->send($return); $args = $g->current(); $callable = $g->key(); } return $args; } $result = call_generator_function(foo()); var_dump($result);
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(8) "123final"
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected ''strlen'' (T_CONSTANT_ENCAPSED_STRING) in /in/p0WWj on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /in/p0WWj on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_CONSTANT_ENCAPSED_STRING in /in/p0WWj on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/p0WWj on line 5
Process exited with code 255.
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