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<?php $str = "abc"; $chars = array_map("ord", str_split($str, 1)); printf(str_repeat("\\x%x", strlen($str)), ...$chars);;
Output for 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.5 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
\x61\x62\x63
Output for 5.5.0 - 5.5.36
Parse error: syntax error, unexpected '.' in /in/bON3H on line 1
Process exited with code 255.

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