Question

我将使用什么语句对从此php脚本生成的结果进行排序。我想排序 - 第1类， - 第2品牌， - 第3价。

我已经环顾四周，但似乎没有什么似乎适用于我使用的脚本。任何帮助表示赞赏。

<?php
$query = $_GET['query']; 
// gets value sent over search form

$min_length = 3;
// you can set minimum length of the query if you want

if(strlen($query) >= $min_length){ // if query length is more or equal minimum length then

    $query = htmlspecialchars($query); 
    // changes characters used in html to their equivalents, for example: < to &gt;

    $query = mysql_real_escape_string($query);
    // makes sure nobody uses SQL injection

    $raw_results = mysql_query("SELECT * FROM plfwinvtable
        WHERE (`Brand` LIKE '%".$query."%') OR (`Description` LIKE '%".$query."%') OR (`Category` LIKE '%".$query."%')") or die(mysql_error());

    // * means that it selects all fields, you can also write: `id`, `title`, `text`
    // articles is the name of our table

    // '%$query%' is what we're looking for, % means anything, for example if $query is Hello
    // it will match "hello", "Hello man", "gogohello", if you want exact match use `title`='$query'
    // or if you want to match just full word so "gogohello" is out use '% $query %' ...OR ... '$query %' ... OR ... '% $query'

    if(mysql_num_rows($raw_results) > 0){ // if one or more rows are returned do following

        while($results = mysql_fetch_array($raw_results)){
        // $results = mysql_fetch_array($raw_results) puts data from database into array, while it's valid it does the loop

            echo "<span style='font-size:14px'>".$results['Category']."</span> - <strong>".$results['Brand']."</strong> - ".$results['Description']." - <span style='color:red;'>$".$results['Price']."</span> ".$results['Size']."<br>";
            // posts results gotten from database(title and text) you can also show id ($results['id'])
        }

    }
    else{ // if there is no matching rows do following
        echo "No results";
    }

}
else{ // if query length is less than minimum
    echo "Minimum length is ".$min_length;
}
?>

Answer 1

不要使用t connect to the config server for a reason I can功能。他们已弃用，将从PHP中删除。相反，您可以使用mysql_*。

要对结果进行排序，您应在查询结尾处使用PDO关键字，例如

ORDER

Answer 2

在SQL语句中使用ORDER将订购结果

$raw_results = mysql_query("SELECT * FROM plfwinvtable
    WHERE (`Brand` LIKE '%".$query."%') OR (`Description` LIKE '%".$query."%') OR (`Category` LIKE '%".$query."%') ORDER BY Category, Brand, Price") or die(mysql_error());

我如何从php查询中排序结果

2 个答案: