OR function in if (trim() == "") {}in PHP -

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or function in if (trim() == "") {} in php?

tried this, not work:

if (trim($query) == "a" or "b") {$search= 'd'; }

i want if either or b exist d goes $search

learn php right way php manual. should be:

if (trim($query) == "a" || trim($query) == "b") {   $search= 'd'; }

or can use in_array:

if (in_array(trim($query), array('a', 'b'))) {   $search = 'd'; }

if wanna partial ones, can do:

if (strpos("a", trim($query)) > -1 || strpos("b", trim($query)) > -1) {

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