php else statement for empty search - php

Question

I have a search function which matches keywords from a database and echo's out some html but I'm missing how to enable the handling of empty searches. Can I use an else statement or do I have to redefine the same parameters and use !isset for if not set?
<?php
$con = mysqli_connect("localhost", "database", "password", "table");
if (isset($_GET['search'])) {
$search_query = $_GET['search_query'];
global $con;
$get_item = "select * from database where keywords like '%$search_query%'";
$run_item = mysqli_query($con, $get_item);
while ($row_item = mysqli_fetch_array($run_item)) {
$item_keywords = $row_item['item_keywords'];
echo "Search found for $search_query";
} // working fine up to here
} else {
echo "Search not found for $search_query";
}
?>

Answer 1

You can use isset() and mysqli_num_rows() to check empty result. ANd use mysqli_real_escape_string for fire your query
if (isset($_GET['search'])) {
if (isset($_GET['search_query']) && $_GET['search_query'] != "") {/// check variable is set or not
$search_query = $_GET['search_query'];
$$search_query = mysqli_real_escape_string($con, $search_query);//
$get_item = "select * from `database` where `keywords` like '%$search_query%'";
$run_item = mysqli_query($con, $get_item);
$row_cnt = mysqli_num_rows($run_item); // count number of rows
if ($row_cnt > 0) {
while ($row_item = mysqli_fetch_array($run_item)) {
$item_keywords = $row_item['item_keywords'];
echo "Search found for $item_keywords";
}
} else {
echo "Search not found for $item_keywords";
}
} else {
echo "Search not found for $item_keywords";
}
}

Answer 2

Change your condition to:
if (isset($_GET['search']) && trim($_GET['search_query']) != '') {
}

Answer 3

You can set condition for empty search like this.
if (isset($_GET['search']) && trim($_GET['search']) !='') { ... }

Answer 4

Modify your if condition
if (isset($_GET['search']) && !empty($_GET['search_query'])) {
}

Answer 5

You can do it by using the empty function:
if (!empty($_GET['search'])) {
//your code
}