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for(;a&$c=$argn[$i++];;~$c=$argn[$i++];)echo$c^1;
Try it online!Try it online!
for(;a&$c=$argn[$i++];)echo$c^1;
Try it online!
for(;~$c=$argn[$i++];)echo$c^1;
prints zero for char 1 and 1 for other chars
prints a string containing of 0-3zero for char 1 and 1 for other chars
for(;a&$c=$argn[$i++];)echo$c^3;echo$c^1;
prints a string containing of 0-3
for(;a&$c=$argn[$i++];)echo$c^3;
