Date Field in Firefox no working with MYSQL - php

Question

I am having trouble with this. So, I created a from that allows you select a date range. Then from there, the form populates with records from the database based on the date range. Pretty easy.
However, the date field didn't work in firefox, so I tried switching it to jquery. and how it doesn't work. I am assuming it's something with the format. So here is my jquery code:
<script>
$(function() {
$( "#from" ).datepicker({
defaultDate: "+1w",
changeMonth: true,
numberOfMonths: 3,
onClose: function( selectedDate ) {
$( "#to" ).datepicker( "option", "minDate", selectedDate );
}
});
$( "#to" ).datepicker({
defaultDate: "+1w",
changeMonth: true,
numberOfMonths: 3,
onClose: function( selectedDate ) {
$( "#from" ).datepicker( "option", "maxDate", selectedDate );
}
});
});
</script>
and here is the mysql statement:
$sql = "SELECT * FROM v88374 WHERE date >= DATE_FORMAT('" . $from . "', '%Y/%m/%d') AND date <= DATE_FORMAT('" . $to . "', '%Y/%m/%d')";
Any help is greatly appreciated. I need it to work in all browsers ahd the reason I switched jquery was because the basic date field wouldn't work in firefox....so if someone has a better fix for this then I am definitely open to it.

Answer 1

You should not be treating dates as strings in your SQL query. Use the appropriate data type in your database (probably DATE). You should then parameterize your query rather than appending the values into the string.
The formatting concern should be delegated to your PHP code. Parse the input into a datetime class, and pass that as a parameter. (Use the strptime function to do the parsing.)