Float type usage instructions in PHP _php tips

The representation of a float type can have several of the following:

Copy Code code as follows:

<?php
$a = 1.234;
$b = 1.2e3;
$c = 7E-10;
?>

What you need to be aware of with PHP's float type is that there is a problem with the accuracy of the float type in PHP. If you need high-precision math calculations, you can use the dedicated math functions provided by PHP arbitrary precision the math functions series and the GMP series functions. Also, don't try to compare variables of float type.

Converting to float
For information on converting strings to float, and the. Conversion to numbers. For values of "other types", the conversion is performed by converting the "value to Integer" and "then to" float. Converting to the integer for the more information. As of PHP 5, a notice is thrown if it converted to float.

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