Description:
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By comparing strings that contain only numbers and are longer that certain length give strange results. When using === I get the correct results. Does that mean that when comparing strings one should use ONLY === and not ==.

Reproduce code:
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<?
$str =  "1111111111111111111";
$str1 = "1111111111111111112";

if ($str == $str1) print "equal";
?>


Actual result:
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equal