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add_keyword_to_resource()

Description

Create a resource / keyword mapping

Parameters

ColumnTypeDefaultDescription
$ref int ID of resource
$keyword string Keyword to be added
$resource_type_field int ID of resource type field
$position int
$optional_column string ''
$optional_value string ''
$normalized boolean false Normalize the keyword?
$stemmed boolean false Use stemming?

Return

void

Location

include/resource_functions.php lines 2142 to 2193

Definition

 
function add_keyword_to_resource(int $ref,$keyword,$resource_type_field,$position,$optional_column='',$optional_value='',$normalized=false,$stemmed=false)
    {
    global $unnormalized_index,$stemming,$noadd;
    
    debug("add_keyword_to_resource: resource:" . $ref . ", keyword: " . $keyword);
    if(!$normalized)
        {
        $kworig=$keyword;
        $keyword=normalize_keyword($keyword);
        if($keyword!=$kworig && $unnormalized_index)
            {
            // $keyword has been changed by normalizing, also index the original value
            add_keyword_to_resource($ref,$kworig,$resource_type_field,$position,$optional_column,$optional_value,true,$stemmed);
            }
        }

    $kworig=$keyword; // Store non-stemmed word
    if (!$stemmed && $stemming && function_exists("GetStem"))
        {
        $keyword=GetStem($keyword);debug("Using stem " . $keyword . " for keyword " . $kworig);
        if($keyword!=$kworig)
            {
            // $keyword has been changed by stemming, also index the original value
            add_keyword_to_resource($ref,$kworig,$resource_type_field,$position,$optional_column,$optional_value,$normalized,true);
            }
        }
    
    if (!(in_array($kworig,$noadd))) // Original (non stemmed) word not in the stop list?
            {
            $keyref=resolve_keyword($keyword,true,false,false); // 3rd param set to false as already normalized. Do not stem this keyword as stem has already been added in this function
            debug("Indexing keyword $keyword - keyref is " . $keyref . ", already stemmed? is " . ($stemmed?"TRUE":"FALSE"));

            $sql_extra_select = "";
            $sql_extra_value = "";
            if($optional_column != '' && $optional_value != '')
                {
                $sql_extra_select = ", `{$optional_column}`";
                $sql_extra_value = ", '" . escape_check($optional_value) . "'";
                }
            $ref = escape_check($ref);
            $keyref = escape_check($keyref);
            $position = escape_check($position);
            $resource_type_field = escape_check($resource_type_field);
            sql_query("INSERT INTO resource_keyword(resource, keyword, position, resource_type_field {$sql_extra_select})
                            VALUES ('$ref', '$keyref', '$position', '$resource_type_field' {$sql_extra_value})");

            ps_query("update keyword set hit_count=hit_count+1 where ref=?",array("i",$keyref));
            
            # Log this
            daily_stat("Keyword added to resource",$keyref);
            }      
    }

This article was last updated 28th June 2022 15:05 Europe/London time based on the source file dated 27th June 2022 12:50 Europe/London time.