Inquire.php

<?php
    $conn = mysqli_connect('localhost','root','12345678','homework')
        or die('Error connecting to MySql server');
    $id = $_POST['id'];
    $name = $_POST['name'];
    $idCard = $_POST['idCard'];
    $isFree = $_POST['isFree'];
    $isHealth = $_POST['isHealth'];
    if(!empty($id)){
        $query = "SELECT * FROM sexworker WHERE id='$id'";
        $result = mysqli_query($conn,$query);
    }
    if(!empty($name)){
        $query = "SELECT * FROM sexworker WHERE name='$name'";
        $result = mysqli_query($conn,$query);
    }
    if(!empty($idCard)){
        $query = "SELECT * FROM sexworker WHERE idCard='$idCard'";
        $result = mysqli_query($conn,$query);
    }
    if(!empty($isFree)){
        $query = "SELECT * FROM sexworker WHERE isFree='$isFree'";
        $result = mysqli_query($conn,$query);
    }
    if(!empty($isHealth)){
        $query = "SELECT * FROM sexworker WHERE isHealth='$isHealth'";
        $result = mysqli_query($conn,$query);
    }

    while($row = mysqli_fetch_array($result)){
        echo '<input id="check" type="checkbox" value="'.$row['id'].'" name="todelete[]"/>';
        echo '<input disabled="disabled" type="text" value="'.$row['id'].'"/>';
        echo '<input id="name" disabled="disabled" type="text" value="'.$row['name'].'"/>';
        echo '<input disabled="disabled" id="idCard" type="text" value="'.$row['idCard'].'"/>';
        echo '<input disabled="disabled" type="text" value="'.$row['isFree'].'"/>';
        echo '<input disabled="disabled" type="text" value="'.$row['isHealth'].'"/>';
        echo '<br/>';
    }
    mysqli_close($conn);
?>