3v4l.org

run code in 300+ PHP versions simultaneously
<?php $outer = function () { echo "Outer<br>"; $times = 0; $times = function () use ( $times ) { echo "Inner : ${times}<br>"; $times++; if ( $times <= 2 ){ inner(); } }; return inner; }; $inner = $outer(); $inner(); ?>
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Using ${var} in strings is deprecated, use {$var} instead in /in/AN3fU on line 7 Outer<br> Fatal error: Uncaught Error: Undefined constant "inner" in /in/AN3fU:15 Stack trace: #0 /in/AN3fU(18): {closure}() #1 {main} thrown in /in/AN3fU on line 15
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Outer<br> Fatal error: Uncaught Error: Undefined constant "inner" in /in/AN3fU:15 Stack trace: #0 /in/AN3fU(18): {closure}() #1 {main} thrown in /in/AN3fU on line 15
Process exited with code 255.
Output for 7.2.6 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Outer<br> Warning: Use of undefined constant inner - assumed 'inner' (this will throw an Error in a future version of PHP) in /in/AN3fU on line 15 Fatal error: Uncaught Error: Call to undefined function inner() in /in/AN3fU:19 Stack trace: #0 {main} thrown in /in/AN3fU on line 19
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
Outer<br> Notice: Use of undefined constant inner - assumed 'inner' in /in/AN3fU on line 15 Fatal error: Uncaught Error: Call to undefined function inner() in /in/AN3fU:19 Stack trace: #0 {main} thrown in /in/AN3fU on line 19
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Outer<br> Notice: Use of undefined constant inner - assumed 'inner' in /in/AN3fU on line 15 Fatal error: Call to undefined function inner() in /in/AN3fU on line 19
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
Parse error: syntax error, unexpected T_FUNCTION in /in/AN3fU on line 2
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_FUNCTION in /in/AN3fU on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/AN3fU on line 2
Process exited with code 255.

preferences:
226.45 ms | 401 KiB | 354 Q