search partial matches in database from user form (PHP/MySQL)

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I have a database of surnames. I want user to be able to enter first letter(s) of surname in a user form, and to do a search providing all partial matches. How do I construct the search query?

$sql = 'SELECT surname
FROM Users
WHERE surname LIKE "' . mysql_real_escape_string($surname) . '%"
ORDER BY 1 ASC';

How To Improve Database Searches with Full-Text Search in , How To Improve Database Searches with Full-Text Search in MySQL 5.6 on Ubuntu like MySQL usually allow partial text lookups using LIKE clauses. They're also limited to matching the user's input exactly, which How To Use the MySQL BLOB Data Type to Store Images with PHP on Ubuntu 18.04. The data in this field is inserted from the values of checkboxes in a form. e.g. one field would containt: subject1,subject2,subject3 while another may only containt subject2,subject3 on my query page.

$sql = "SELECT * FROM users WHERE surname LIKE '$surname_part%'";

MySQL Full text search, MySQL Full text search: Full-Text Search in MySQL server lets users run MATCH() function searches a string against a text collection (A set of  @BrainzJnr you need to create the database in mysql or if the case is different check your permission settings but if that doesn't work just make a database with another name of your choice and modify the mysqli codes in order to fit your database. by just changing any where you see brainztech to the name of the database you created. if that doesnt work then go on some research on youtube on connecting mysql and php majorly "How to use xampp control panel"

I had created the powerful module for the same. You can use it anywhere like:

<?php
if (!class_exists('AbstractDB'))
    require_once dirname(__FILE__) . '/AbstractDB.php';
class SearchString extends AbstractDB{

    # Default Constructor
    public function __construct() {
        parent::__construct();
        $this->connect();
        return true;
    }
    /*=====================================================
    $options = array(
        'table' => "table_name",
        "columns" => array(col1,col2,col3..),
        "target" => "target column to match",
        "string" => "String..."
    );
    ========================================*/
    public function search($options,$dir="desc",$limit=20000, $exact_match = false){
        $table = $options['table'];
        if(is_array($options['target'])){
            foreach($options['target'] as $target){
                if(!in_array($target,$options['columns'])) array_unshift($options['columns'],$target);
            }
        }elseif(!empty($options['target'])){
            if(!in_array($options['target'],$options['columns'])) array_unshift($options['columns'],$options['target']);
        }else{
            return array("status" => false, "message" => "Target not defined!");
        }
        $columns = implode(",",$options['columns']);
        $string = preg_replace('/[^\p{L}\p{N}\s]/u', '', $options['string']);
        #splitting string to word and sort array
        $string = preg_replace('/\s+/', ' ', $string);
        $words = explode(" ",$string);
        $words = $this->sortByLength($words, $dir);
        $word = array_shift($words);
        $like_stmts = array();
        $target_columns = array();
        if(is_array($options['target'])){
            foreach($options['target'] as $target){
                $like_stmts[] = ($exact_match) ? "{$target} RLIKE \"[[:<:]]{$word}[[:>:]]\"" : "{$target} LIKE \"%{$word}%\"";
                $target_columns[] = $target;
            }
        }elseif(!empty($options['target'])){
            $like_stmts[] = ($exact_match) ? "{$options['target']} RLIKE \"[[:<:]]{$word}[[:>:]]\"" : "{$options['target']} LIKE \"%{$word}%\"";
            $target_columns[] = $options['target']; 
        }

        $like_query = implode(" OR ",$like_stmts);

        $qry = "SELECT {$columns} FROM {$table} WHERE {$like_query} LIMIT {$limit}";
        $results = $this->fetch_all_array($qry);
        if(!count($results)) return array();
        $response = ($exact_match) ? $this->exactFilter($results,$words,$target_columns) : $this->filter($results,$words,$target_columns);
        return $response;
    }

    private function exactFilter($array, $words, $targets){
        if(!count($words)) return $array;
        $word = strtolower(array_shift($words));
        $matching = array_filter($array, function ($row) use($word,$targets){
            $status = false;
            foreach($targets as $target){
                $col = strtolower($row[$target]);
                $str = preg_replace('/[^\p{L}\p{N}\s]/u', '', $col);
                $str = preg_replace('/\s+/', ' ', $str);
                $expression = '/\b(?:' . $word . ')\b/i';
                if (preg_match($expression, $str)) {
                    $status = true;
                    break;
                }
            }

            return $status;
        });
        return $this->filter($matching,$words,$targets);
    }

    private function filter($array, $words, $targets){
        if(!count($words)) return $array;
        $word = strtolower(array_shift($words));
        $matching = array_filter($array, function ($row) use($word,$targets){
            $status = false;
            foreach($targets as $target){
                $col = strtolower($row[$target]);
                $str = preg_replace('/[^\p{L}\p{N}\s]/u', '', $col);
                $str = preg_replace('/\s+/', ' ', $str);
                $pos = strpos($str, $word);
                if( $pos !== false ){
                    $status = true;
                    break;
                }
            }

            return $status;
        });
        return $this->filter($matching,$words,$targets);
    }

    #==========================================
    # Sorting Directions
    private function asc($a,$b){
        return strlen($a) - strlen($b);
    }
    private function desc($a,$b){
        return strlen($b) - strlen($a);
    }
    #------------------------------------------

    #==========================================
    #sorting the words based on length
    private function sortByLength($array,$dir="desc"){
        switch($dir){
            case "asc":
                usort($array, array('SearchString',$dir));
            break;
            case "desc":
                usort($array, array('SearchString',$dir));
            break;
            default:
        }
        return $array;
    }

    public function matchings($data,$options){
        $matching = array_filter($data,function($row) use($options){
            $status = true;
            foreach($options as $key => $val){
                $status = ($row[$key] != $val) ? false : $status;
            }
            return $status;
        });
        return $matching;
    }
}

MySQL LIKE operator string function, Example of MySQL LIKE operator with wildcard (%) matching from the beginning <title>example php mysql like function | w3resource</title> <meta $dbh = new PDO("mysql:host=$hostname;dbname=$db", $username, $password); Python BeautifulSoup exercises · Form Template · Composer - PHP  In this PHP article, let us enrich by adding more fields and options and implement the PHP advanced search by filtering the MySQL data. In the advanced search form, we have inputs to search with respect to the exact or any one of a word from given phrase, to exclude given string and to search results that start with given word.

Advanced text searching using full-text indexes – Hacking with PHP , Once we have a FULLTEXT index on our table, it opens up a whole new world of pattern matching, which, as of MySQL 4, allows us to do boolean matching with  Full-text search. Full-Text Search in MySQL server lets users run full-text queries against character-based data in MySQL tables. You must create a full-text index on the table before you run full-text queries on a table. The full-text index can include one or more character-based columns in the table.

MySQL 8.0 Reference Manual :: 3.3.4.7 Pattern Matching, MySQL provides standard SQL pattern matching as well as a form of pattern To find names containing exactly five characters, use five instances of the _  PHP MySQL Ajax Live Search. In this tutorial you'll learn how to create a live MySQL database search feature using PHP and Ajax. Ajax Live Database Search. You can create a simple live database search functionality utilizing the Ajax and PHP, where the search results will be displayed as you start typing some character in search input box.

Learning PHP, MySQL, and JavaScript: A Step-By-Step Guide to , It is well suited, however, to database queries, which is why it is still in use after all this time. a MySQL query such as: SELECT surname,firstname FROM users WHERE partial matches when you know only part of the string that you are searching user interaction such as checking email address validity in input forms,  PHP/SQL search form with multiple search input fields To see the live example of this tutorial click HERE The following form displays search results combining more than one search term.