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<?php $original_multibyte_string = 'țată în HERE'; $a_non_multibyte_str_same_length = '123456789HERE'; // HERE is on 10th (9th element) character echo 'strpos finds HERE in multibyte at: '.strpos($original_multibyte_string,'HERE').' '.'strpos finds HERE in non-multibyte at: '.strpos($a_non_multibyte_str_same_length,'HERE'); // OUTPUTS: strpos finds HERE in multibyte at: 12 strpos finds HERE in non-multibyte at: 9 echo "\n"; // now lets test the multibyte: echo 'mb_strpos finds HERE in multibyte at: '.mb_strpos($original_multibyte_string,'HERE',0,'UTF-8').' '.'mb_strpos finds HERE in non-multibyte at: '.mb_strpos($a_non_multibyte_str_same_length,'HERE',0,'UTF-8'); // OUTPUTS: mb_strpos finds HERE in multibyte at: 9 mb_strpos finds HERE in non-multibyte at: 9

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