362 lines
11 KiB
PHP
362 lines
11 KiB
PHP
<?php
|
|
/**
|
|
* @package SQLite Integration
|
|
* @author Kojima Toshiyasu, Justin Adie
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* This class defines user defined functions(UDFs) for PDO
|
|
* This replaces the functions used in the SQL statement with the PHP functions.
|
|
* If you want another, add the name in the array and define the function with
|
|
* PHP script.
|
|
*/
|
|
class PDOSQLiteUDFS {
|
|
public function __construct(&$pdo){
|
|
foreach ($this->functions as $f=>$t) {
|
|
$pdo->sqliteCreateFunction($f, array($this, $t));
|
|
}
|
|
}
|
|
|
|
private $functions = array(
|
|
'month' => 'month',
|
|
'year' => 'year',
|
|
'day' => 'day',
|
|
'unix_timestamp' => 'unix_timestamp',
|
|
'now' => 'now',
|
|
'char_length' => 'char_length',
|
|
'md5' => 'md5',
|
|
'curdate' => 'curdate',
|
|
'rand' => 'rand',
|
|
'substring' => 'substring',
|
|
'dayofmonth' => 'day',
|
|
'second' => 'second',
|
|
'minute' => 'minute',
|
|
'hour' => 'hour',
|
|
'date_format' => 'dateformat',
|
|
'from_unixtime' => 'from_unixtime',
|
|
'date_add' => 'date_add',
|
|
'date_sub' => 'date_sub',
|
|
'adddate' => 'date_add',
|
|
'subdate' => 'date_sub',
|
|
'localtime' => 'now',
|
|
'localtimestamp' => 'now',
|
|
//'date'=>'date',
|
|
'isnull' => 'isnull',
|
|
'if' => '_if',
|
|
'regexpp' => 'regexp',
|
|
'concat' => 'concat',
|
|
'field' => 'field',
|
|
'log' => 'log',
|
|
'least' => 'least',
|
|
'replace' => 'replace',
|
|
'get_lock' => 'get_lock',
|
|
'release_lock' => 'release_lock',
|
|
'ucase' => 'ucase',
|
|
'lcase' => 'lcase',
|
|
'inet_ntoa' => 'inet_ntoa',
|
|
'inet_aton' => 'inet_aton',
|
|
'datediff' => 'datediff',
|
|
'locate' => 'locate'
|
|
);
|
|
|
|
public function month($field){
|
|
$t = strtotime($field);
|
|
return date('n', $t);
|
|
}
|
|
public function year($field){
|
|
$t = strtotime($field);
|
|
return date('Y', $t);
|
|
}
|
|
public function day($field){
|
|
$t = strtotime($field);
|
|
return date('j', $t);
|
|
}
|
|
public function unix_timestamp($field = null){
|
|
return is_null($field) ? time() : strtotime($field);
|
|
}
|
|
public function second($field){
|
|
$t = strtotime($field);
|
|
return intval( date("s", $t) );
|
|
}
|
|
public function minute($field){
|
|
$t = strtotime($field);
|
|
return intval(date("i", $t));
|
|
}
|
|
public function hour($time){
|
|
list($hours, $minutes, $seconds) = explode(":", $time);
|
|
return intval($hours);
|
|
}
|
|
public function from_unixtime($field, $format=null){
|
|
// $field is a timestamp
|
|
//convert to ISO time
|
|
$date = date("Y-m-d H:i:s", $field);
|
|
//now submit to dateformat
|
|
|
|
return is_null($format) ? $date : $self->dateformat($date, $format);
|
|
}
|
|
public function now(){
|
|
return date("Y-m-d H:i:s");
|
|
}
|
|
public function curdate() {
|
|
return date("Y-m-d");
|
|
}
|
|
public function char_length($field){
|
|
return strlen($field);
|
|
}
|
|
public function md5($field){
|
|
return md5($field);
|
|
}
|
|
public function rand(){
|
|
return rand(0,1);
|
|
}
|
|
public function substring($text, $pos, $len=null){
|
|
if (is_null($len)) return substr($text, $pos-1);
|
|
else return substr($text, $pos-1, $len);
|
|
}
|
|
public function dateformat($date, $format){
|
|
$mysql_php_dateformats = array ( '%a' => 'D', '%b' => 'M', '%c' => 'n', '%D' => 'jS', '%d' => 'd', '%e' => 'j', '%H' => 'H', '%h' => 'h', '%I' => 'h', '%i' => 'i', '%j' => 'z', '%k' => 'G', '%l' => 'g', '%M' => 'F', '%m' => 'm', '%p' => 'A', '%r' => 'h:i:s A', '%S' => 's', '%s' => 's', '%T' => 'H:i:s', '%U' => 'W', '%u' => 'W', '%V' => 'W', '%v' => 'W', '%W' => 'l', '%w' => 'w', '%X' => 'Y', '%x' => 'o', '%Y' => 'Y', '%y' => 'y', );
|
|
$t = strtotime($date);
|
|
$format = strtr($format, $mysql_php_dateformats);
|
|
$output = date($format, $t);
|
|
return $output;
|
|
}
|
|
public function date_add($date, $interval) {
|
|
$interval = $this->deriveInterval($interval);
|
|
switch (strtolower($date)) {
|
|
case "curdate()":
|
|
$objDate = new Datetime($this->curdate());
|
|
$objDate->add(new DateInterval($interval));
|
|
$returnval = $objDate->format("Y-m-d");
|
|
break;
|
|
case "now()":
|
|
$objDate = new Datetime($this->now());
|
|
$objDate->add(new DateInterval($interval));
|
|
$returnval = $objDate->format("Y-m-d H:i:s");
|
|
break;
|
|
default:
|
|
$objDate = new Datetime($date);
|
|
$objDate->add(new DateInterval($interval));
|
|
$returnval = $objDate->format("Y-m-d H:i:s");
|
|
}
|
|
return $returnval;
|
|
}
|
|
public function date_sub($date, $interval) {
|
|
$interval = $this->deriveInterval($interval);
|
|
switch (strtolower($date)) {
|
|
case "curdate()":
|
|
$objDate = new Datetime($this->curdate());
|
|
$objDate->sub(new DateInterval($interval));
|
|
$returnval = $objDate->format("Y-m-d");
|
|
break;
|
|
case "now()":
|
|
$objDate = new Datetime($this->now());
|
|
$objDate->sub(new DateInterval($interval));
|
|
$returnval = $objDate->format("Y-m-d H:i:s");
|
|
break;
|
|
default:
|
|
$objDate = new Datetime($date);
|
|
$objDate->sub(new DateInterval($interval));
|
|
$returnval = $objDate->format("Y-m-d H:i:s");
|
|
}
|
|
return $returnval;
|
|
}
|
|
private function deriveInterval($interval) {
|
|
$interval = trim(substr(trim($interval), 8));
|
|
$parts = explode(' ', $interval);
|
|
foreach ($parts as $part) {
|
|
if (!empty($part)) {
|
|
$_parts[] = $part;
|
|
}
|
|
}
|
|
$type = strtolower(end($_parts));
|
|
switch ($type) {
|
|
case "second": $unit = 'S'; return 'PT' . $_parts[0] . $unit; break;
|
|
case "minute": $unit = 'M'; return 'PT' . $_parts[0] . $unit; break;
|
|
case "hour": $unit = 'H'; return 'PT' . $_parts[0] . $unit; break;
|
|
case "day": $unit = 'D'; return 'P' . $_parts[0] . $unit; break;
|
|
case "week": $unit = 'W'; return 'P' . $_parts[0] . $unit; break;
|
|
case "month": $unit = 'M'; return 'P' . $_parts[0] . $unit; break;
|
|
case "year": $unit = 'Y'; return 'P' . $_parts[0] . $unit; break;
|
|
case "minute_second":
|
|
list($minutes, $seconds) = explode(':', $_parts[0]);
|
|
return 'PT' . $minutes . 'M' . $seconds . 'S';
|
|
break;
|
|
case "hour_second":
|
|
list($hours, $minutes, $seconds) = explode (':', $_parts[0]);
|
|
return 'PT' . $hours . 'H' . $minutes . 'M' . $seconds . 'S';
|
|
break;
|
|
case "hour_minute":
|
|
list($hours, $minutes) = explode (':', $_parts[0]);
|
|
return 'PT' . $hours . 'H' . $minutes . 'M';
|
|
break;
|
|
case "day_second":
|
|
$days = intval($_parts[0]);
|
|
list($hours, $minutes, $seconds) = explode (':', $_parts[1]);
|
|
return 'P' . $days . 'D' . 'T' . $hours . 'H' . $minutes . 'M' . $seconds . 'S';
|
|
break;
|
|
case "day_minute":
|
|
$days = intval($_parts[0]);
|
|
list($hours, $minutes) = explode(':', $parts[1]);
|
|
return 'P' . $days . 'D' . 'T' . $hours . 'H' . $minutes . 'M';
|
|
break;
|
|
case "day_hour":
|
|
$days = intval($_parts[0]);
|
|
$hours = intval($_parts[1]);
|
|
return 'P' . $days . 'D' . 'T' . $hours . 'H';
|
|
break;
|
|
case "year_month":
|
|
list($years, $months) = explode ('-', $_parts[0]);
|
|
return 'P' . $years . 'Y' . $months . 'M';
|
|
break;
|
|
}
|
|
}
|
|
|
|
public function date($date){
|
|
return date("Y-m-d", strtotime($date));
|
|
}
|
|
|
|
public function isnull($field){
|
|
return is_null($field);
|
|
}
|
|
|
|
public function _if($expression, $true, $false){
|
|
return ($expression == true) ? $true : $false;
|
|
}
|
|
|
|
public function regexp($field, $pattern){
|
|
$pattern = str_replace('/', '\/', $pattern);
|
|
$pattern = "/" . $pattern ."/i";
|
|
return preg_match ($pattern, $field);
|
|
}
|
|
|
|
public function concat() {
|
|
$returnValue = "";
|
|
$argsNum = func_num_args();
|
|
$argsList = func_get_args();
|
|
for ($i = 0; $i < $argsNum; $i++) {
|
|
if (is_null($argsList[$i])) {
|
|
return null;
|
|
}
|
|
$returnValue .= $argsList[$i];
|
|
}
|
|
return $returnValue;
|
|
}
|
|
|
|
public function field() {
|
|
$numArgs = func_num_args();
|
|
if ($numArgs < 2 or is_null(func_get_arg(0))) {
|
|
return null;
|
|
}
|
|
$arr = func_get_args();
|
|
$searchString = strtolower(array_shift($arr));
|
|
for ($i = 0; $i < $numArgs-1; $i++) {
|
|
if ($searchString === strtolower($arr[$i])) return $i + 1;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
public function log() {
|
|
$numArgs = func_num_args();
|
|
if ($numArgs == 1) {
|
|
$arg1 = func_get_arg(0);
|
|
return log($arg1);
|
|
} else if ($numArgs == 2) {
|
|
$arg1 = func_get_arg(0);
|
|
$arg2 = func_get_arg(1);
|
|
return log($arg1)/log($arg2);
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public function least() {
|
|
$arr = func_get_args();
|
|
return min($arr);
|
|
}
|
|
|
|
public function replace($haystack, $needle, $replace) {
|
|
return str_replace($needle, $replace, $haystack);
|
|
}
|
|
|
|
/**
|
|
* These two functions are meaningless in SQLite
|
|
* So we return meaningless statement and do nothing
|
|
* @param string $name
|
|
* @param integer $timeout
|
|
* @return string
|
|
*/
|
|
public function get_lock($name, $timeout) {
|
|
return '1=1';
|
|
}
|
|
public function release_lock($name) {
|
|
return '1=1';
|
|
}
|
|
|
|
/**
|
|
* MySQL aliases for upper and lower functions
|
|
* @param $string
|
|
* @return string
|
|
*/
|
|
public function ucase($string) {
|
|
return "upper($string)";
|
|
}
|
|
public function lcase($string) {
|
|
return "lower($string)";
|
|
}
|
|
|
|
/**
|
|
* MySQL aliases for INET_NTOA and INET_ATON functions
|
|
* @param unsigned integer, string respectively
|
|
* @return string, unsigned integer respectively
|
|
*/
|
|
public function inet_ntoa($num) {
|
|
return long2ip($num);
|
|
}
|
|
public function inet_aton($addr) {
|
|
$int_data = ip2long($addr);
|
|
$unsigned_int_data = sprintf('%u', $address);
|
|
return $unsigned_int_data;
|
|
}
|
|
|
|
/**
|
|
* MySQL aliase for DATEDIFF function
|
|
* @param string, string
|
|
* @return string
|
|
*/
|
|
public function datediff($start, $end) {
|
|
/* PHP 5.3.2 has a serious bug in DateTime::diff()
|
|
* see https://bugs.php.net/bug.php?id=51184
|
|
*/
|
|
if (version_compare(PHP_VERSION, '5.3.2', '==')) {
|
|
$start_date = strtotime($start);
|
|
$end_date = strtotime($end);
|
|
$interval = floor(($start_date - $end_date)/(3600*24));
|
|
return $interval;
|
|
} else {
|
|
$start_date = new DateTime($start);
|
|
$end_date = new DateTime($end);
|
|
$interval = $end_date->diff($start_date, false);
|
|
return $interval->format('%r%a');
|
|
}
|
|
}
|
|
/**
|
|
* emulates MySQL LOCATE() function
|
|
*/
|
|
public function locate($substr, $str, $pos = 0) {
|
|
if (!extension_loaded('mbstring')) {
|
|
if (($val = stros($str, $substr, $pos)) !== false) {
|
|
return $val + 1;
|
|
} else {
|
|
return 0;
|
|
}
|
|
} else {
|
|
if (($val = mb_strpos($str, $substr, $pos)) !== false) {
|
|
return $val + 1;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
?>
|