How to check if a string contains a certain Chinese word in PHP? -

How to check if a string contains a certain Chinese word in PHP? -

i got string $str = "颜色代码";, check if string contain "颜色". i've tried using code below, maintain getting false return.

mb_strpos($str, "颜色", 0 ,"gbk");

the code work:

$str = "颜色代码"; $test = mb_strpos($str, "颜色", 0 ,"gbk"); echo $test;

but problem facing because 颜色 strpos returns 0 right string position code logic might misinterpret false. see mean take 颜色 , place @ end of string this:

$str = "代码颜色"; $test = mb_strpos($str, "颜色", 0 ,"gbk"); echo $test;

and returned string position 3 right well. improve approach see if 颜色 in string utilize preg_match this:

$str = "颜色代码"; $test = preg_match("/颜色/", $str); echo $test;

and output boolean 1 equates true believe looking for.

beyond functionality working expected, there clear speed benefit using preg_match on mb_strpos as shown here.

mb_strpos: 3.7908554077148e-5 preg_match: 1.1920928955078e-5

it’s more 3x faster utilize preg_match when compared mb_strpos.

php