如何對一個查詢使用多if

Question

我在使用PHP中的if條件時遇到麻煩，只有兩個if(s)在工作，這是PHP中的代碼塊

if($_POST) {
    if(($_POST['type'] == '0') && ($_POST['priceminrahn'] != '') && ($_POST["priceminej"] != '') && ($_POST["mahale"] != '0')) {
        $sql = "select * from orders JOIN city ON orders.orders_mahaleh = city.id where orders_show='1' AND orders_mahaleh='$mahal' AND  orders_polpish between '$priceminrahn' AND '$pricemaxrahn' AND orders_ejarehbaha between '$priceminej' AND '$pricemaxej' AND orders_subject='1'";
    }
    if(($_POST['type'] == '0') && ($_POST['priceminrahn'] != '')) {
        $sql = "select * from orders JOIN city ON orders.orders_mahaleh = city.id where orders_show='1' AND orders_polpish between '$priceminrahn' AND '$pricemaxrahn' AND orders_subject='1'";
    }
    if(($_POST['type'] == '0') && ($_POST['priceminrahn'] != '') && ($_POST["priceminej"] != '')) {
        $sql = "select * from orders JOIN city ON orders.orders_mahaleh = city.id where orders_show='1' AND  orders_polpish between '$priceminrahn' AND '$pricemaxrahn' AND orders_ejarehbaha between '$priceminej' AND '$pricemaxej' AND orders_subject='1'";
    }
    if(($_POST['type'] == '0') && ($_POST["mahale"] != '')) {
        $sql = "select * from orders JOIN city ON orders.orders_mahaleh = city.id where orders_show='1' AND orders_mahaleh='$mahal' AND orders_subject='1'";
    }
    if(($_POST['type'] == '0') && ($_POST["state"] != '') && ($_POST["mahale"] == '0')) {
        $sql = "select * from orders JOIN city ON orders.orders_mahaleh = city.id where orders_show='1' AND orders_ostan='$ostan' AND orders_subject='1'";
    }
} else {
    $sql = "select * from orders JOIN city ON orders.orders_mahaleh = city.id where orders_show='1'";
}

只有兩個if工作

我想要執行任何條件

我想按輸入過濾數據

Answer 1

if($_POST) {
    if($_POST['type'] == '0'){
    if(($_POST['priceminrahn'] != '') && ($_POST["priceminej"] != '') && ($_POST["mahale"] != '0')) {
        $sql = "select * from orders JOIN city ON orders.orders_mahaleh = city.id where orders_show='1' AND orders_mahaleh='$mahal' AND  orders_polpish between '$priceminrahn' AND '$pricemaxrahn' AND orders_ejarehbaha between '$priceminej' AND '$pricemaxej' AND orders_subject='1'";
    }
    if(($_POST["state"] != '') && ($_POST["mahale"] == '0')) {
        $sql = "select * from orders JOIN city ON orders.orders_mahaleh = city.id where orders_show='1' AND orders_ostan='$ostan' AND orders_subject='1'";
    }
    if(($_POST['priceminrahn'] != '') && ($_POST["priceminej"] != '')) {
        $sql = "select * from orders JOIN city ON orders.orders_mahaleh = city.id where orders_show='1' AND  orders_polpish between '$priceminrahn' AND '$pricemaxrahn' AND orders_ejarehbaha between '$priceminej' AND '$pricemaxej' AND orders_subject='1'";
    }
    if($_POST["mahale"] != ''){
        $sql = "select * from orders JOIN city ON orders.orders_mahaleh = city.id where orders_show='1' AND orders_mahaleh='$mahal' AND orders_subject='1'";
    }
    if($_POST['priceminrahn'] != '') {
        $sql = "select * from orders JOIN city ON orders.orders_mahaleh = city.id where orders_show='1' AND orders_polpish between '$priceminrahn' AND '$pricemaxrahn' AND orders_subject='1'";
    }
    }
} else {
    $sql = "select * from orders JOIN city ON orders.orders_mahaleh = city.id where orders_show='1'";
}