Includable simple object based relational php database, that saves data to files and uses only 1 file (the database system php file)

[Kristjan Robam]

Author: Kristjan Robam
Tel. 372 6861327
E-mail: robam man 20 20 @ hot mail . com

includablesimpleobjectbasedrelationalphpdb.php :

<?php

class Myobj {
public $a;
public $a2;
public function getNameOfClass()
{
return static::class;
}
}

class Myobj2 {
public $a2;
public $a3;
public function getNameOfClass()
{
return static::class;
}
}

class Easyphpdb {

private $dbtables;
function setvalue($a) {
$this->dbtables=$a;
}
function getvalue() {
return $this->dbtables;
}

function saveobjecttable($obj, $name) {
if (file_exists($name)) {
return false;
}
$b=serialize($obj);
$fh = fopen($name.".edb", "a");
fwrite($fh, $b);
fclose($fh);
return true;
}
function loadobjecttables() {
$dbtables = array();
foreach (glob("*.edb") as $file) {
$file1 = file_get_contents($file, true);
$dbtables[] = unserialize($file1);
}
$this->setvalue($dbtables);
}
function deleteotable($otabname) {
if (file_exists($otabname.".edb")) {
unlink($otabname.".edb");
}
$this->loadobjecttables();
}

function insertobject($obj) {
$this->loadobjecttables();
$oclass=$obj->getNameOfClass();
echo $oclass;
$tabls=$this->getvalue();
$oarridx=-1;
for($i=0; $i<count($tabls); $i++) {
if($tabls[$i][0]->getNameOfClass()==$oclass) {
$oarridx=$i;
}
}
if($oarridx==-1) return false;
$tabls[$oarridx][]=$obj;
unlink($tabls[$oarridx][0]->getNameOfClass().".edb");
$b=serialize($tabls[$oarridx]);
$fh = fopen($tabls[$oarridx][0]->getNameOfClass().".edb", "a");
fwrite($fh, $b);
fclose($fh);
}
function convertObjectClass($objectA,
$objectB) {
$new_object = array();

foreach($objectA as $property => $value) {
$new_object[$property]=$value;
}

foreach($objectB as $property => $value) {
$new_object[$property]=$value;
}

return $new_object;
}


function query($query) {
$this->loadobjecttables();
$ovars=array();
$objects=$this->getvalue();
for($i=0; $i<count($objects); $i++) {
$ovars[]=array_keys(get_object_vars($objects[$i][0]));
}
$mches=false;
$results=null;

for($i=0; $i<count($objects); $i++) {
for($j=0; $j<count($ovars); $j++) {
if(preg_match("/^select ".$ovars[$i][$j]." from ".$objects[$i][0]->getNameOfClass().";$/",$query)) {
return array_column($objects[$i], $ovars[$i][$j]);
$mches=true;
break;
}
}
}


for($i=0; $i<count($objects); $i++) {
for($j=0; $j<count($ovars); $j++) {
for($k=0; $k<count($objects); $k++) {
for($l=0; $l<count($ovars); $l++) {
if(preg_match("/^select \* from ".$objects[$i][0]->getNameOfClass()." join ".$objects[$k][0]->getNameOfClass()." on \(".$objects[$i][0]->getNameOfClass()."\.".$ovars[$i][$j]."\=".$objects[$k][0]->getNameOfClass()."\.".$ovars[$k][$l]."\);$/",$query)) {

$outp=array();

$oobj = $this->convertObjectClass($objects[$i][0], $objects[$k][0]);
$outp[]=$oobj;
$mches=true;
return $outp;
break;
}
}
}
}
}


return $mches;
}

}

$aone=array();

$a1=new Myobj();
$a1->a="11111";
$a1->a2="22222";
$aone[]=$a1;

$a1=new Myobj();
$a1->a="33333";
$a1->a2="44444";
$aone[]=$a1;

$atwo=array();

$a1=new Myobj2();
$a1->a2="22222";
$a1->a3="12345";
$atwo[]=$a1;

$a1=new Myobj2();
$a1->a2="44444";
$a1->a3="67890";
$atwo[]=$a1;

$mydb=new Easyphpdb();

//$mydb->saveobjecttable($aone, "Myobj");
//$mydb->saveobjecttable($atwo, "Myobj2");

$a1=new Myobj();
$a1->a="333335";
$a1->a2="444445";

//$mydb->insertobject($a1);
//$mydb->deleteotable("Myobj");

print_r($mydb->query("select a from Myobj;"));
//print_r($mydb->query("select a2 from Myobj2;"));

//print_r($mydb->query("select * from Myobj join Myobj2 on (Myobj.a2=Myobj2.a2);"));



?>

[Kristjan Robam]

Corrected function name.

File:

function objectClassestoarray($objectA,

$oobj = $this->objectClassestoarray($objects[$i][0], $objects[$k][0]);

[Kristjan Robam]

Code update.

dbsys.php:

<?php

class Myobj {
public $a;
public $a2;
public function getNameOfClass()
{
return static::class;
}
}

class Myobj2 {
public $a2;
public $a3;
public function getNameOfClass()
{
return static::class;
}
}

class Easyphpdb {

private $dbtables;
function setvalue($a) {
$this->dbtables=$a;
}
function getvalue() {
return $this->dbtables;
}

function saveobjecttable($obj, $name) {
if (file_exists($name)) {
return false;
}
$b=serialize($obj);
$fh = fopen($name.".edb", "a");
fwrite($fh, $b);
fclose($fh);

chmod($name.".edb", 0700);

return true;
}
function loadobjecttables() {
$dbtables = array();
foreach (glob("*.edb") as $file) {
$file1 = file_get_contents($file, true);
$dbtables[] = unserialize($file1);
}
$this->setvalue($dbtables);
}
function deleteotable($otabname) {
if (file_exists($otabname.".edb")) {
unlink($otabname.".edb");
}
$this->loadobjecttables();
}

function insertobject($obj) {
$this->loadobjecttables();
$oclass=$obj->getNameOfClass();

$tabls=$this->getvalue();
$oarridx=-1;
for($i=0; $i<count($tabls); $i++) {
if($tabls[$i][0]->getNameOfClass()==$oclass) {
$oarridx=$i;
}
}
if($oarridx==-1) return false;
$tabls[$oarridx][]=$obj;
unlink($tabls[$oarridx][0]->getNameOfClass().".edb");
$b=serialize($tabls[$oarridx]);
$fh = fopen($tabls[$oarridx][0]->getNameOfClass().".edb", "a");
fwrite($fh, $b);
fclose($fh);

chmod($tabls[$oarridx][0]->getNameOfClass().".edb", 0700);

}
function objectClassestoarray($objectA,
$objectB) {
$new_object = array();

foreach($objectA as $property => $value) {
$new_object[$property]=$value;
}

foreach($objectB as $property => $value) {
$new_object[$property]=$value;
}

return $new_object;
}


function query($query) {
$this->loadobjecttables();
$ovars=array();
$objects=$this->getvalue();
for($i=0; $i<count($objects); $i++) {
$ovars[]=array_keys(get_object_vars($objects[$i][0]));
}
$mches=false;
$results=null;
for($i=0; $i<count($objects); $i++) {
for($j=0; $j<count($ovars); $j++) {
if(preg_match("/^select ".$ovars[$i][$j]." from ".$objects[$i][0]->getNameOfClass().";$/",$query)) {
return array_column($objects[$i], $ovars[$i][$j]);
$mches=true;
break;
}
}
}

$outp=array();

for($i=0; $i<count($objects); $i++) {
for($j=0; $j<count($ovars[$i]); $j++) {
for($k=0; $k<count($objects); $k++) {
for($l=0; $l<count($ovars[$k]); $l++) {

if(preg_match("/^select \* from ".$objects[$i][0]->getNameOfClass()." join ".$objects[$k][0]->getNameOfClass().
" on \(".$objects[$i][0]->getNameOfClass()."\.".$ovars[$i][$j]."\=".$objects[$k][0]->getNameOfClass().
"\.".$ovars[$k][$l]."\);$/",$query)) {

for($ii=0; $ii<count($objects[$i]); $ii++) {
for($ii2=0; $ii2<count($objects[$k]); $ii2++) {
if($objects[$i][$ii]->{$ovars[$i][$j]}==$objects[$k][$ii2]->{$ovars[$k][$l]}) {
$oobj = $this->objectClassestoarray($objects[$i][$ii], $objects[$k][$ii2]);
$outp[]=$oobj;
}
}
}
}
}
}
}
}
if(count($outp)>0) {
return $outp;

}


return $mches;
}

}

$aone=array();

$a1=new Myobj();
$a1->a="11111";
$a1->a2="22222";
$aone[]=$a1;

$a1=new Myobj();
$a1->a="33333";
$a1->a2="44444";
$aone[]=$a1;

$atwo=array();

$a1=new Myobj2();
$a1->a2="22222";
$a1->a3="12345";
$atwo[]=$a1;

$a1=new Myobj2();
$a1->a2="44444";
$a1->a3="67890";
$atwo[]=$a1;

$a1=new Myobj2();
$a1->a2="11111";
$a1->a3="67888";
$atwo[]=$a1;


$mydb=new Easyphpdb();

/*
$mydb->saveobjecttable($aone, "Myobj");
$mydb->saveobjecttable($atwo, "Myobj2");
*/
/*

$a1=new Myobj();
$a1->a="333335";
$a1->a2="444445";

$a1=new Myobj2();
$a1->a2="44444";

$a1->a3="67800";

//$mydb->insertobject($a1);
//$mydb->deleteotable("Myobj");

var_dump($mydb->query("select a from Myobj;"));
var_dump($mydb->query("select a2 from Myobj2;"));
*/
var_dump($mydb->query("select * from Myobj join Myobj2 on (Myobj.a2=Myobj2.a2);"));
var_dump($mydb->query("select * from Myobj join Myobj2 on (Myobj.a=Myobj2.a2);"));



?>


Kristjan Robam
E-mail: rob am man 20 20 @ hot mail . com
(Please remove spaces...)

[kristja...@gmail.com]

New version available now….

Allowed queries:

select * from classa;

select a from classa;

select * from classa join classb on (classa.a=classb.c);

select * from classa where a=abc and b=abcd;

select * from classa where a=abc;


databasesystem.php:

<?php

class Dbobj {

function getNameOfClass()
{
return static::class;
}
}

class Easydbsystem {

var $dbtables;

function gettime() {
return date("d.m.Y H:i:s");
}

function saveobjecttables() {
$tabls=$this->dbtables;
for($i=0; $i<count($tabls); $i++) {
$oc=$tabls[$i][0]->getNameOfClass();
if (file_exists($oc.".edb")) {
unlink($oc.".edb");
}
$b=serialize($tabls[$i]);
$fh = fopen($oc.".edb", "a");
fwrite($fh, $b);
fclose($fh);
chmod($oc.".edb", 0700);
}
return true;
}

function saveobjecttable($objcl) {
$tabls=$this->dbtables;
$obclindex=-1;
for($i=0; $i<count($tabls); $i++) {
if($tabls[$i][0]->getNameOfClass()==$objcl) {
$obclindex=$i;
break;
}
}
if (file_exists($objcl.".edb")) {
unlink($objcl.".edb");
}
$b=serialize($tabls[$obclindex]);
$fh = fopen($objcl.".edb", "a");
fwrite($fh, $b);
fclose($fh);
chmod($objcl.".edb", 0700);
return true;
}


function makearrayunique($array){
$duplicate_keys = array();
$tmp = array();

foreach ($array as $key => $val){
if (is_object($val))
$val = (array)$val;

if (!in_array($val, $tmp))
$tmp[] = $val;
else $duplicate_keys[] = $key;
}

foreach ($duplicate_keys as $key)
unset($array[$key]);
return $array;
}

function deleteduplicates() {
$ob=$this->dbtables;
for($i=0; $i<count($ob); $i++) {
$o12=$this->makearrayunique($ob[$i]);
$ob[$i]=$o12;
}
$this->saveobjecttables();
}

function deleteduplicatescl($objcl) {
$ob=$this->dbtables;
$obclindex=-1;
for($i=0; $i<count($ob); $i++) {
if($ob[$i][0]->getNameOfClass()==$objcl) {
$obclindex=$i;
break;
}
}
$o12=$this->makearrayunique($ob[$obclindex]);
$ob[$obclindex]=$o12;
$this->dbtables=$ob;
$this->saveobjecttable($objcl);

}


function loadobjecttables() {
$dbtables = array();
foreach (glob("*.edb") as $file) {

$path_parts = pathinfo($file);
if(!class_exists($path_parts['filename'])) {
continue;

}
$file1 = file_get_contents($file, true);
$dbtables[] = unserialize($file1);
}

$this->dbtables=$dbtables;

}
function deleteotable($otabname) {
if (file_exists($otabname.".edb")) {
unlink($otabname.".edb");
}
$this->loadobjecttables();
}

function insertobject($obj) {
$this->loadobjecttables();
$oclass=$obj->getNameOfClass();

$tabls=$this->dbtables;

$oarridx=-1;
for($i=0; $i<count($tabls); $i++) {
if($tabls[$i][0]->getNameOfClass()==$oclass) {
$oarridx=$i;
}
}
if($oarridx==-1) return false;
$tabls[$oarridx][]=$obj;
unlink($tabls[$oarridx][0]->getNameOfClass().".edb");
$b=serialize($tabls[$oarridx]);
$fh = fopen($tabls[$oarridx][0]->getNameOfClass().".edb", "a");
fwrite($fh, $b);
fclose($fh);
chmod($tabls[$oarridx][0]->getNameOfClass().".edb", 0700);
}
function objectClassestoarray($objectA,
$objectB) {
$new_object = array();

foreach($objectA as $property => $value) {
$new_object[$property]=$value;
}

foreach($objectB as $property => $value) {
$new_object[$property]=$value;
}

return $new_object;
}


function query($query) {
$this->loadobjecttables();
$ovars=array();

$objects=$this->dbtables;

for($i=0; $i<count($objects); $i++) {
$ovars[]=array_keys(get_object_vars($objects[$i][0]));
}

$mches=array();
$results=null;
$exitf=false;

for($i=0; $i<count($objects); $i++) {
if($exitf) break;
for($j=0; $j<count($ovars); $j++) {
if($exitf) break;
if(!class_exists($objects[$i][0]->getNameOfClass())) continue;
if(preg_match("/^select \* from ".$objects[$i][0]->getNameOfClass().";$/",$query)) {
$objectsList = [];
foreach ($objects[$i] as $obj) {
$objectsList[] = (array)$obj;
}
return $objectsList;
$exitf=true;
}
}
}

for($i=0; $i<count($objects); $i++) {
if($exitf) break;
for($j=0; $j<count($ovars); $j++) {
if($exitf) break;
if(!class_exists($objects[$i][0]->getNameOfClass())) continue;

if(preg_match("/^select ".$ovars[$i][$j]." from ".$objects[$i][0]->getNameOfClass().";$/",$query)) {
return array_column($objects[$i], $ovars[$i][$j]);

$exitf=true;

}
}
}

$outp=array();
for($i=0; $i<count($objects); $i++) {

if($exitf) break;

for($j=0; $j<count($ovars[$i]); $j++) {

if($exitf) break;
for($k=0; $k<count($objects); $k++) {
if($exitf) break;

for($l=0; $l<count($ovars[$k]); $l++) {

if($exitf) break;
if(!class_exists($objects[$i][0]->getNameOfClass())) continue;
if(!class_exists($objects[$k][0]->getNameOfClass())) continue;

if(preg_match("/^select \* from ".$objects[$i][0]->getNameOfClass()." join ".$objects[$k][0]->getNameOfClass().
" on \(".$objects[$i][0]->getNameOfClass()."\.".$ovars[$i][$j]."\=".$objects[$k][0]->getNameOfClass().
"\.".$ovars[$k][$l]."\);$/",$query)) {
for($ii=0; $ii<count($objects[$i]); $ii++) {
for($ii2=0; $ii2<count($objects[$k]); $ii2++) {
if($objects[$i][$ii]->{$ovars[$i][$j]}==$objects[$k][$ii2]->{$ovars[$k][$l]}) {
$oobj = $this->objectClassestoarray($objects[$i][$ii], $objects[$k][$ii2]);
$outp[]=$oobj;
}
}
}

$exitf=true;
}
}
}
}
}

for($k=0; $k<count($objects); $k++) {
if($exitf) break;

for($l=0; $l<count($ovars[$k]); $l++) {

if($exitf) break;
for($l2=0; $l2<count($ovars[$k]); $l2++) {
if($exitf) break;
if(!class_exists($objects[$k][0]->getNameOfClass())) continue;

if(preg_match("/^select \* from ".$objects[$k][0]->getNameOfClass()." where ".$ovars[$k][$l]."\=(.*) and ".$ovars[$k][$l2]."\=(.*);$/",$query, $matches)) {

for($ii2=0; $ii2<count($objects[$k]); $ii2++) {

if($objects[$k][$ii2]->{$ovars[$k][$l]}==$matches[1]&&$objects[$k][$ii2]->{$ovars[$k][$l2]}==$matches[2]) {
$oobj = (array)$objects[$k][$ii2];
$outp[]=$oobj;
}
}
$exitf=true;
}
}
}
}


for($k=0; $k<count($objects); $k++) {
if($exitf) break;

for($l=0; $l<count($ovars[$k]); $l++) {

if($exitf) break;
if(!class_exists($objects[$k][0]->getNameOfClass())) continue;
if(preg_match("/^select \* from ".$objects[$k][0]->getNameOfClass()." where ".$ovars[$k][$l]."\=(.*);$/",$query, $matches)) {

for($ii2=0; $ii2<count($objects[$k]); $ii2++) {

if($objects[$k][$ii2]->{$ovars[$k][$l]}==$matches[1]) {
$oobj = (array)$objects[$k][$ii2];
$outp[]=$oobj;
}
}
$exitf=true;

}
}
}

if(count($outp)>0) {
return $outp;
}


return $mches;
}

}

?>

Who wants me to add features to it, e-mail me. It will cost at least 100 $-s.

Kristjan Robam
372 6861327
kri st ja n 12 9 19 83 @ g ma il . c o m