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<?php $x = 'Hi Nemo'; function solution (string $str) { foreach(explode(' ', $str) as $wordNum => $value) { if ($value === 'Nemo') { return "I found Nemo at $wordNum+1"; } } return 'I can\'t found Nemo'; } var_dump(solution($x));
Output for git.master_jit, git.master
string(19) "I found Nemo at 1+1"

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