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<?php var_dump(filter_var('123.5645454', FILTER_VALIDATE_REGEXP,array("options"=>array("regexp"=>"/^([1-9][0-9]*|0)(\.[0-9]{10})?$/")))); var_dump(filter_var('abc34', FILTER_VALIDATE_REGEXP,array("options"=>array("regexp"=>"/\d+(?:\.\d{1,2})?/")))); var_dump(filter_var(16849.99992, FILTER_VALIDATE_REGEXP,array("options"=>array("regexp"=>"~^\\d+(?:\\.\\d{1,10})?$~"))));

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