Blank / Empty Search Form field - php

Question

I have set up a search form for my database. When I search and results are found a message is echoed below the search form. For instance, 10 records found, 0 records found.
How can I get that message to disappear if the search form field is blank/empty. Currently it displays 15 records found for a blank/empty search field. Which is all the database records.
Thanks for any help.
Form:
<form action="" method="post">
<input type="text" name="search_box" value="<?php if (isset($_POST['search_box'])) echo $_POST['search_box']; ?>" placeholder="Search here ..."/>
<input value="Search" name="search" type="submit" /><br>
</form>
PHP:
<?php
$count = mysqli_num_rows($result);
if($count > 0){
echo $count . " Records Found";
}if($count == 0){
echo "0 Records Found";
}if($count == ""){
echo "";
}
?>
Query:
//Retrieve the practice posts from the database table
$query = "SELECT * FROM practice";
//check if search... button clicked, if so query fields
if(isset($_POST['search'])){
$search_term = trim($_POST['search_box']);
$query .= " WHERE title = '{$search_term}'";
$query .= " or subject LIKE '%{$search_term}%'";}

Answer 1

<?php
//Retrieve the practice posts from the database table
$query = "SELECT * FROM practice";
//check if search... button clicked, if so query fields
if(isset($_POST['search'])){
$search_term = trim($_POST['search_box']);
$query .= " WHERE title = '{$search_term}'";
$query .= " or subject LIKE '%{$search_term}%'";
//execute your query
$result = $dbconnect->query($query);
$count = mysqli_num_rows($result);
if($count > 0){
echo $count . " Records Found";
}
if($count == 0){
echo "0 Records Found";
}
}
else {
// it is mean your search box value($_POST['search']) is empty, so it will echo null value
echo $_POST['search'];
}
?>
please try, hope will save your day :D

Answer 2

Please replace PHP code with these one :-
<?php
if(isset($_REQUEST['search_box'])){
$count = mysqli_num_rows($result);
} else {
$count = '';
}
if($count > 0){
echo $count . " Records Found";
}if($count == 0){
echo "0 Records Found";
}if($count == ""){
echo "";
}
?>

Answer 3

Just put your code in the post method
if ((isset($_POST['search_box'])) && ($_POST['search_box']!=""))
{
$count = mysqli_num_rows($result);
if($count > 0){
echo $count . " Records Found";
}if($count == 0){
echo "0 Records Found";
}if($count == ""){
echo "";
}
}