JHsearch($search_string)

王朝other·作者佚名  2006-01-09
窄屏简体版  字體: |||超大  

Type:

code fragment

Version:

version 1.0

Requires:

no_search_words.txt, no_search_tables.txt

<?PHP

/***************************************************************************

JHsearch() was written by James R Hartford

JHsearch() may be used and modified freely, but I ask that you please note

the original author (James R Hartford) and refer to the function by its

original name (JHsearch())

If you do make changes that I may find useful, please email them to jim@jarzion.com and I will include your name in later versions of JHsearch()

database connection is set up for MySQL but can be changed if needed.

****************************************************************************/

//use these globals to set up your database connection.

global $dbhost; $dbhost = '';

global $dbname; $dbname = '';

global $dbuser; $dbuser = '';

global $dbpass; $dbpass = '';

/*******************************************************************

Below is an example of how the JHsearch function can be used and

display the results of the search. You can test for the table name

and display the result accordingly for that table.

*********************************************************************/

$searchResult = JHsearch("test a");

if (count($searchResult) < 1){

$output .= "No results for search 'test a'";

}else{

$SR = array_keys($searchResult);

for($i = 0; $i < count($SR); $i++){

if($SR[$i] == "site_info"){//this is checking to see if the table name is media

for($c=0; $c < count($searchResult[$SR[$i]]); $c++){

echo "Siteinfo: ".$searchResult[$SR[$i]][$c]['description']."<br>";

}

}

if($SR[$i] == "class"){//this is checking to see if the table name is media

for($c=0; $c < count($searchResult[$SR[$i]]); $c++){

echo "Class: ".$searchResult[$SR[$i]][$c]['title']."<br>";

}

}

}

}

/*##############################################################

################################################################*/

/***********************************************************

Function: JHsearch($search_string)

Purpose: search an entire database and return the results in a

3 dimensional array. Words found in no_search_words.txt

will not be searched. Table names found in

no_search_tables.txt will not be searched.

result example: $result[table_name][row][field_name]

Author: James R Hartford

************************************************************/

function JHsearch( $string ){

$newstring = $string;

$searchcrit = explode(" ", $newstring); //get the words to be searched

$dontsearchwords = JHgetnos("words"); //get the words not to search into an array

//get the actual search criteria

$searchcrit = array_diff($searchcrit, $dontsearchwords);

$searchcrit = JHarray_reindex($searchcrit);

//get the tables to search

$query = "Show Tables";

$tables = JHRquery($query);

for($i = 0; $i < count($tables); $i++){

$gettables[$i] = $tables[$i][0];

}

$tables = $gettables;

$tabletakeout = JHgetnos("tables"); //tables to leave out of search

$tables = array_diff($tables, $tabletakeout);

$tables = JHarray_reindex($tables);

$resultcount = 0;

//Build the search query

for($i = 0; $i < count($tables) && count($searchcrit) > 0; $i++){

$query = "SELECT * FROM ";

$query .= $tables[$i]." WHERE ";

$qt = "SHOW FIELDS FROM ".$tables[$i];

$fields = JHRquery($qt);

for($m = 0; $m < count($fields); $m++){

if(substr($fields[$m]['Type'], 0, 3) != "int" && substr($fields[$m]['Type'], 0, 4) != "date"){

if($m > 0 ){

$query.= " (";

}

for( $sc = 0; $sc < count($searchcrit); $sc++){

$query .= $fields[$m]['Field']." LIKE '%".$searchcrit[$sc]."%'";

if($sc != count($searchcrit) - 1){

$query.= " AND ";

}

}

if($m > 0 && $m < count($fields)){

$query.= ") OR ";

}

}

}

//this if statement is for if the query ended in WHERE because the only

//field types in the table are ints or dates

if(substr($query, strlen($query) - 6, 6) != "WHERE " || $tempResult[$tables[$i][0]][0] != ""){

$query = substr($query,0,strlen($query) - 4);

//echo $query."<br><br>";

$tempResult[$tables[$i]] = JHRquery($query);

}

if($tempResult[$tables[$i]][0] != ""){

$realResult[$tables[$i]] = $tempResult[$tables[$i]];

}

}

return $realResult;

}

/*********************************************************

Function: JHgetnos($where);

Purpose: Pares a text file to find out what not to search

Author: James R Hartford

**********************************************************/

function JHgetnos($where){

//get the words that should not be searched for

if($where == "words"){$filename = "no_search_words.txt";}

//get the tables that should not be searched

else if($where == "tables"){$filename = "no_search_tables.txt";}

$handle = fopen ($filename, "r");

$contents = explode(" ", fread ($handle, filesize ($filename)));

fclose ($handle);

return $contents;

}

/*********************************************************

Function: JHarray_reindex($array);

Purpose: reindex an array

Author: James R Hartford

**********************************************************/

function JHarray_reindex($somearray){

$keys = array_keys($somearray);

for($i = 0; $i < count($keys);$i++){

$result[$i] = $somearray[$keys[$i]];

}

return $result;

}

/*********************************************************

Function: JHRquery($sql_string);

Purpose: Execute query and return results in a 2d array

Author: James R Hartford

**********************************************************/

function JHRquery ( $query ){

global $dbhost;global $dbname;global $dbuser;global $dbpass;

$link = mysql_connect ( $dbhost, $dbuser, $dbpass );

mysql_select_db($dbname) or die("Could not select database $dbhost");

$result = mysql_query($query, $link) or die("Could not execute query $query");

$resultArray = array();

for ($i = 0; $temp = mysql_fetch_array ( $result ); $i++) {

if ($temp){$resultArray [$i] = $temp;}

}

return $resultArray;

}

?>

 
 
 
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