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<?php function &foo() { $x = array(1,2,3); yield $x; echo "Gen: "; var_dump($x); yield 'done'; } foreach (foo() as &$val) { var_dump($val); $val[] = 42; }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 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 - 8.3.4, 8.3.6
array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } Gen: array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(42) } Notice: Only variable references should be yielded by reference in /in/ssgpF on line 7 string(4) "done" Fatal error: Uncaught Error: [] operator not supported for strings in /in/ssgpF:12 Stack trace: #0 {main} thrown in /in/ssgpF on line 12
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } Gen: array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(42) } Notice: Only variable references should be yielded by reference in /in/ssgpF on line 7 string(4) "done" Fatal error: Uncaught Error: [] operator not supported for strings in /in/ssgpF:12 Stack trace: #0 {main} thrown in /in/ssgpF on line 12
Process exited with code 255.
Output for 7.3.32 - 7.3.33
array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } Gen: array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(42) } string(4) "done" Fatal error: Uncaught Error: [] operator not supported for strings in /in/ssgpF:12 Stack trace: #0 {main} thrown in /in/ssgpF on line 12
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } Gen: array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(42) } Notice: Only variable references should be yielded by reference in /in/ssgpF on line 7 string(4) "done" Fatal error: [] operator not supported for strings in /in/ssgpF on line 12
Process exited with code 255.
Output for 5.4.1 - 5.4.45
Parse error: syntax error, unexpected '$x' (T_VARIABLE) in /in/ssgpF on line 5
Process exited with code 255.

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