搜索限制查询和分页 php mysqli wgen search anything

Question

When I search then All rows/querys display. That's why page loading is too slow.

I want to show only 100 rows/querys with paging when I will search something.

or make it faster if any modification need.

Please

$sql = "SELECT * FROM crawl WHERE title LIKE '%".$strKeyword."%' "; $query = mysqli_query($conn,$sql);

$num_rows = mysqli_num_rows($query);

$per_page = 2;   // Per Page $page  = 1;

if(isset($_GET["Page"])) {  $page = $_GET["Page"]; }

$prev_page = $page-1; $next_page = $page+1;

$row_start = (($per_page*$page)-$per_page); if($num_rows<=$per_page) {  $num_pages =1; } else if(($num_rows % $per_page)==0) {  $num_pages
=($num_rows/$per_page) ; } else {   $num_pages =($num_rows/$per_page);  $num_pages = (int)$num_pages; } $row_end = $per_page * $page; if($row_end > $num_rows) {    $row_end = $num_rows; }

$sql .= "ORDER BY id, title, ogimage DESC LIMIT $row_start ,28 "; $query = mysqli_query($conn,$sql);

Answer 1

• LIKE starting with a wild card is slow because it cannot use an index
• FULLTEXT , together with MATCH is much faster, but has limitations.
• "Computing" which rows to OFFSET has several problems, including performance.

See Pagination