note 103028 rejected from language.operators.comparison by thiago

Note Submitter: vitaliy dot andrianov at gmail dot com ---- Just found a weird thing with float numbers: var_dump ( (7.12 * 100) == 712 ); // true (as expected) var_dump ( (8.12 * 100) == 812 ); // false var_dump ( (int)(8.12 * 100) == 812 ); // false var_dump ( (8.12 * 100) == (int)812 ); // false var_dump ( (int)(8.12 * 100) == (int)812 ); // false The solution is: var_dump ( round(8.12 * 100) == 812 ); // true or an optional one just for test: var_dump ( md5(8.12 * 100) == md5(812) ); // true I didn't find any explanation of this. I have also checked a range of 0.00 - 100.00 increasing by 0.01 and there are lots of "false" conditions in different numbers without any logic. PHP version is 5.2.16; 5.2.17; 5.3.4; Hope that helps someone.