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I think answer should be A. You can play this program on any PHP online playgrounds.
Prorgram:
$string = 'Good luck!';
$start = 10;
var_dump(substr($string, $start));
output:
string(0) ""
upvoted 4 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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thuanpt
2 years, 6 months agoAndrewPetaPeta
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2 years, 12 months ago[Removed]
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4 years, 3 months ago