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run code in 150+ php & hhvm versions
Bugs & Features
<?php function foo() { echo 'In generator func foo',"\n"; $string = (yield); echo $string; /*for ($i = 1; $i <= 3; $i++) { yield $i; }*/ } $generator = foo(); $generator->send('Hello world!'); //foreach ($generator as $value) echo "$value\n";
Output for 5.5.24 - 5.6.21, hhvm-3.12.0, 7.0.0 - 7.1.0
In generator func foo Hello world!
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.4.45
In generator func foo Notice: Use of undefined constant yield - assumed 'yield' in /in/vjRTm on line 4 yield Fatal error: Call to a member function send() on a non-object in /in/vjRTm on line 11
Process exited with code 255.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/vjRTm on line 12
Process exited with code 255.
Output for 4.3.2 - 4.4.9
In generator func foo Notice: Use of undefined constant yield - assumed 'yield' in /in/vjRTm on line 4 yield Fatal error: Call to a member function on a non-object in /in/vjRTm on line 11
Process exited with code 255.
Output for 4.3.0 - 4.3.1
In generator func foo Notice: Use of undefined constant yield - assumed 'yield' in /in/vjRTm on line 4 yield Fatal error: Call to a member function on a non-object in /in/vjRTm on line 11