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<?php$a = 1; /* ámbito global */function test(){    echo $a; /* referencia a una variable del ámbito local */}test();?>
Output for 5.4.0 - 5.4.32, 7.2.29 - 7.2.33, 7.3.16 - 7.3.31, 7.4.3 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
<?php$a = 1; /* ámbito global */function test(){    echo $a; /* referencia a una variable del ámbito local */}test();?>
Output for 8.0.13
Parse error: syntax error, unexpected variable "$a " in /in/bOmb5 on line 1
Process exited with code 255.
Output for 7.3.32 - 7.3.33, 7.4.33
Parse error: syntax error, unexpected '$a ' (T_VARIABLE) in /in/bOmb5 on line 1
Process exited with code 255.
preferences:
212.25 ms | 402 KiB | 173 Q