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run code in 150+ php & hhvm versions
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<?php var_dump( str_word_count("The pokey theory", 1) );
based on aHrQo
Output for 4.3.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(3) { [0]=> string(3) "The" [1]=> string(5) "pokey" [2]=> string(6) "theory" }