php - comapring with boolean using triple equals for result set of mysql query -

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this question has answer here:

why using triple equals here compare ?

if ($conn->query($sql) === true) {     echo "new record created successfully"; }

many php functions may return mixed types, unlike many other languages. if compare ==, values tested. therefore non-zero value equal true, , things 123 == '123abc' true.

the === operator requires types same also, object not equal true , 123 === '123' doesn't equal true.


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