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<?php $fileContents = [ 'here is some text.', 'here is more text.', 'even more text.' ]; var_export( array_unique( str_word_count( strtolower( implode(' ', $fileContents) ), 1 ) ) );
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
array ( 0 => 'here', 1 => 'is', 2 => 'some', 3 => 'text', 6 => 'more', 8 => 'even', )
preferences:
83.62 ms | 402 KiB | 123 Q