Description:
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When using array_search with strict set to FALSE will allways return the first matching element of an array, which is absolutly correct, but will also match every (boolean) TRUE value of an array (which is bad). This way, you could either hope no value is set to (boolean) TRUE or are forced to enable strict, which is not allways desired.

This behavoir should either be better documented ( as is the behavior of FALSE ( "" , 0 , -1 , FALSE ) or changed to only match against ( "1" , 1 , "TRUE" , TRUE ).

Reproduce code:
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$array = array ( 'foo' , TRUE , 'bar' ) ;
$search = array_search ( 'baz' , $array ) ;

var_dump ( $search ) ;

Expected result:
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bool(false)

Actual result:
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int(1)