$a = array(
array('id'=>'113','email'=>'yintx_1292342352@163.com'),
array('id'=>'111','email'=>'yintx_1293456456@163.com'),
array('id'=>'109','email'=>'yintx_129@99999.com')
);
$b = array(
array('user_id'=>'113','count'=>'1'),
array('user_id'=>'109','count'=>'8')
);
foreach($a as $ka=>$va){
foreach($b as $kb=>$vb){
if($va['id'] == $vb['user_id']){
$a[$ka]['count'] = $vb['count'];
}
}
}
var_dump($a);
----------
array (size=3)
0 =>
array (size=3)
'id' => string '113' (length=3)
'email' => string 'yintx_1292342352@163.com' (length=24)
'count' => string '1' (length=1)
1 =>
array (size=2)
'id' => string '111' (length=3)
'email' => string 'yintx_1293456456@163.com' (length=24)
2 =>
array (size=3)
'id' => string '109' (length=3)
'email' => string 'yintx_129@99999.com' (length=19)
'count' => string '8' (length=1)