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run code in 200+ php & hhvm versions
Bugs & Features
<?php $php = ""; $i = 0; function f() { global $i; $i++; if($i > 5) { return 'i'; } return "\${" . f() . "}"; } var_dump(f()); eval(f());
based on p2UZa
Output for 5.4.0 - 5.4.10, 7.0.0 - 7.2.0
string(16) "${${${${${i}}}}}" Parse error: syntax error, unexpected end of file in /in/KsiqX(18) : eval()'d code on line 1
Process exited with code 255.
Output for 5.4.11 - 5.6.28
string(16) "${${${${${i}}}}}" Parse error: syntax error, unexpected end of file in /in/KsiqX(18) : eval()'d code on line 1
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
string(16) "${${${${${i}}}}}" Parse error: syntax error, unexpected $end in /in/KsiqX(18) : eval()'d code on line 1
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
string(16) "${${${${${i}}}}}" Parse error: parse error, unexpected $ in /in/KsiqX(18) : eval()'d code on line 1
Process exited with code 255.
Output for 4.3.2 - 4.3.4
string(16) "${${${${${i}}}}}" Parse error: parse error in /in/KsiqX(18) : eval()'d code on line 1
Process exited with code 255.