PHP操作 二维数组模拟mysql函数

public function monimysqltest(){

$testarray=array(

array('ss'=>'1','dd'=>'11'),

array('ss'=>'2','dd'=>'22'),

array('ss'=>'3','dd'=>'33'),

array('ss'=>'4','dd'=>'44'),

);

$sa=$this->arrayfilter($testarray,'ss',array(3,4));

echo'模拟where
';

print_r($sa);

echo'
';

$array[] = array('id'=>1,'price'=>50);

$array[] = array('id'=>2,'price'=>70);

$array[] = array('id'=>3,'price'=>50);

$array[] = array('id'=>4,'price'=>20);

$arre=$this->arraysort($array,'price',SORT_DESC);

echo'模拟orderby
';

print_r($arre);

echo'';

$aa = array(

array('id' => 123, 'name' => '张三'),

array('id' => 123, 'name' => '李四'),

array('id' => 124, 'name' => '王五'),

array('id' => 125, 'name' => '赵六'),

array('id' => 126, 'name' => '赵六')

);

$key = 'id';

$bb=$this->assoc_unique($aa, $key);

echo'模拟groupby
';

print_r($bb);

echo'模拟limit直接PHParray_slice这个函数搞定
';

}

/*PHP模仿mysql where筛选*/

function arrayfilter($arr,$key,$val){

$list=array();

foreach ($arr as $k=>$v){

foreach ($val as $k1=>$v1){

if($v[$key]==$v1){

$list[]=$v;

}

}

}

return $list;

}

/*PHP二维排序排序*/

function arraysort($arr,$key1,$paixu){

foreach ($arr as $key=>$value){

$price[$key] = $value[$key1];

}

array_multisort($price,$paixu,$arr);

return $arr;

}

//模拟groupby

function assoc_unique($arr, $key) {

$arr1=$arr;

$tmp_arr = array();

foreach ($arr as $k => $v) {

if (in_array($v[$key], $tmp_arr)) {//搜索$v[$key]是否在$tmp_arr数组中存在，若存在返回true

unset($arr[$k]);

} else {

$tmp_arr[] = $v[$key];

}

}

foreach ($arr as $k=>$v){

$arr[$k]['lists']=$this->arrayfilter($arr1,$key,array($v[$key]));

}

return $arr;

}