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    <p>This is because <strong>floating point numbers have limited precision</strong>. </p> <p>You can find more information about this trait on <a href="http://php.net/manual/en/language.types.float.php">this page in the PHP manual</a>.</p> <blockquote> <p>Floating point numbers have limited precision. Although it depends on the system, PHP typically uses the IEEE 754 double precision format, which will give a maximum relative error due to rounding in the order of 1.11e-16. Non elementary arithmetic operations may give larger errors, and, of course, error progragation must be considered when several operations are compounded.</p> <p>Additionally, rational numbers that are exactly representable as floating point numbers in base 10, like 0.1 or 0.7, do not have an exact representation as floating point numbers in base 2, which is used internally, no matter the size of the mantissa. Hence, they cannot be converted into their internal binary counterparts without a small loss of precision. This can lead to confusing results: for example, floor((0.1+0.7)*10) will usually return 7 instead of the expected 8, since the internal representation will be something like 7.9999999999999991118....</p> <p>So never trust floating number results to the last digit, and never compare floating point numbers for equality. If higher precision is necessary, the arbitrary precision math functions and gmp functions are available.</p> </blockquote> <p>Please note that this is not a trait specific to PHP; <a href="http://en.wikipedia.org/wiki/Floating_point#Accuracy_problems">it is just the way floating point numbers work</a>.</p>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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