Can someone explain why this is returning true?
I tried removing any one character and it returns false but exactly this code returns true I cannot understand why
var_dump('608E-4234' == '272E-3063');
1 Answers
PHP documentation says:
If both operands are numeric strings, or one operand is a number and the other one is a numeric string, then the comparison is done numerically
In this case you're trying to compare 2 floats:
var_dump((float) '608E-4234'); // double(0)
var_dump((float) '272E-3063'); // double(0)
The reason why those floats are equal is that their values out of precision settings. Try to compare 272E-306:
var_dump((float) '272E-306'); // double(2.72E-304)
and you'll see another result.
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