- var_dump: documentation ( source)
- filter_var: documentation ( source)
<?php
var_dump(filter_var(1456165, FILTER_VALIDATE_FLOAT));
var_dump(filter_var('1456165', FILTER_VALIDATE_FLOAT));
var_dump(filter_var('.1456165', FILTER_VALIDATE_FLOAT));
var_dump(filter_var('0.1456165', FILTER_VALIDATE_FLOAT));
var_dump(filter_var('145.6165', FILTER_VALIDATE_FLOAT));
var_dump(filter_var('bolha', FILTER_VALIDATE_FLOAT));
var_dump(filter_var('516.46.00', FILTER_VALIDATE_FLOAT));
var_dump(filter_var('516.46.32', FILTER_VALIDATE_FLOAT));
var_dump(filter_var('51646.00', FILTER_VALIDATE_FLOAT));
?>