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<?php var_dump((float)'1e1'); var_dump((int)'1e1'); var_dump('1e1');
Output for 7.1.0 - 7.2.0
float(10) int(10) string(3) "1e1"
Output for 4.3.0 - 7.0.20
float(10) int(1) string(3) "1e1"