请问php二维数组 查找相同的值合并 如何写？

这个是数组 
主要功能就是Thinkphp视图模型里查询的结果  我想

查询每个数组里的相同的标题值 然后进行合并                合并数组 貌似用array_merge()
我怎么查找相同的标题呢  foreach 遍历 返回数组里的索引值 可以么       貌似 key() 函数有这个功能 求好心人具体写个

相同的标题 数组元素的位置 这样返回 合并的时候就直接 这样的形式用 可以么
array_merge(array[0],array[1])

相同的标题 然后合并的是图片的连接字段这样 pictureurl就是这个不一样
简单说就是多图上传 发文章这样的  文章找找以后要是有几千篇 那数组就是好几倍的量  高效的计算 能用的 求大神指点啊~ 
这样

array(2) {  [0] => array(5) {    ["picTitle"] => string(33) "标题1"    ["picCategroy"] => string(6) "分类"    ["picAuthor"] => string(12) "作者"    ["picPostTime"] => string(19) "2014-11-20 16:05:16"    ["pictureurl"] => string(55) "attachment/picture/uploadify/20141120/546da0784831c.png"  }  [1] => array(5) {    ["picTitle"] => string(33) "标题1"    ["picCategroy"] => string(6) "分类"    ["picAuthor"] => string(12) "作者"    ["picPostTime"] => string(19) "2014-11-20 16:05:16"    ["pictureurl"] => string(55) "attachment/picture/uploadify/20141120/546da0746edb8.png"  }}

回复讨论(解决方案)

那你最终要达成什么样的结果呢？
目的不同，算法也不同

那你最终要达成什么样的结果呢？
目的不同，算法也不同

array(2) {  [0] => array(5) {    ["picTitle"] => string(33) "标题1"    ["picCategroy"] => string(6) "分类"    ["picAuthor"] => string(12) "作者"    ["picPostTime"] => string(19) "2014-11-20 16:05:16"    ["pictureurl"] => string(55) "attachment/picture/uploadify/20141120/546da0784831c.png,attachment/picture/uploadify/20141120/546da0746edb8.png"  }}

就是这样的 相同的标题 不同的就是pictureurl
合并就行了 求版主指点~

$ar = array(  array(    "picTitle" => "标题1",    "picCategroy" => "分类",    "picAuthor" => "作者",    "picPostTime" => "2014-11-20 16:05:16",    "pictureurl" => "attachment/picture/uploadify/20141120/546da0784831c.png",  ),  array(    "picTitle" => "标题1",    "picCategroy" => "分类",    "picAuthor" => "作者",    "picPostTime" => "2014-11-20 16:05:16",    "pictureurl" => "attachment/picture/uploadify/20141120/546da0746edb8.png",  ),);foreach(call_user_func_array('array_merge_recursive', $ar) as $key=>$item) {  $res[$key] = join(',', array_unique($item));}var_export($res);

array (  'picTitle' => '标题1',  'picCategroy' => '分类',  'picAuthor' => '作者',  'picPostTime' => '2014-11-20 16:05:16',  'pictureurl' => 'attachment/picture/uploadify/20141120/546da0784831c.png,attachment/picture/uploadify/20141120/546da0746edb8.png',)

$ar = array(  array(    "picTitle" => "标题1",    "picCategroy" => "分类",    "picAuthor" => "作者",    "picPostTime" => "2014-11-20 16:05:16",    "pictureurl" => "attachment/picture/uploadify/20141120/546da0784831c.png",  ),  array(    "picTitle" => "标题1",    "picCategroy" => "分类",    "picAuthor" => "作者",    "picPostTime" => "2014-11-20 16:05:16",    "pictureurl" => "attachment/picture/uploadify/20141120/546da0746edb8.png",  ),);foreach(call_user_func_array('array_merge_recursive', $ar) as $key=>$item) {  $res[$key] = join(',', array_unique($item));}var_export($res);

array (  'picTitle' => '标题1',  'picCategroy' => '分类',  'picAuthor' => '作者',  'picPostTime' => '2014-11-20 16:05:16',  'pictureurl' => 'attachment/picture/uploadify/20141120/546da0784831c.png,attachment/picture/uploadify/20141120/546da0746edb8.png',)

版主大人 还得麻烦您看眼 这个是在相同的标题下才合并的 貌似有点复杂

array(6) {  [0] => array(5) {    ["picTitle"] => string(7) "标题2"    ["picCategroy"] => string(6) "海报"    ["picAuthor"] => string(12) "星耀学园"    ["picPostTime"] => string(19) "2014-11-26 11:59:50"    ["pictureurl"] => string(55) "attachment/picture/uploadify/20141126/547550278b7db.jpg"  }  [1] => array(5) {    ["picTitle"] => string(7) "标题2"    ["picCategroy"] => string(6) "海报"    ["picAuthor"] => string(12) "星耀学园"    ["picPostTime"] => string(19) "2014-11-26 11:59:50"    ["pictureurl"] => string(55) "attachment/picture/uploadify/20141126/54755027ab89b.jpg"  }  [2] => array(5) {    ["picTitle"] => string(7) "标题2"    ["picCategroy"] => string(6) "海报"    ["picAuthor"] => string(12) "星耀学园"    ["picPostTime"] => string(19) "2014-11-26 11:59:50"    ["pictureurl"] => string(55) "attachment/picture/uploadify/20141126/547550273b753.jpg"  }  [3] => array(5) {    ["picTitle"] => string(7) "标题2"    ["picCategroy"] => string(6) "海报"    ["picAuthor"] => string(12) "星耀学园"    ["picPostTime"] => string(19) "2014-11-26 11:59:50"    ["pictureurl"] => string(55) "attachment/picture/uploadify/20141126/54755027d8488.jpg"  }  [4] => array(5) {    ["picTitle"] => string(33) "同步写入信息和附件表里"    ["picCategroy"] => string(6) "海报"    ["picAuthor"] => string(12) "星耀学园"    ["picPostTime"] => string(19) "2014-11-20 16:05:16"    ["pictureurl"] => string(55) "attachment/picture/uploadify/20141120/546da0746edb8.png"  }  [5] => array(5) {    ["picTitle"] => string(33) "同步写入信息和附件表里"    ["picCategroy"] => string(6) "海报"    ["picAuthor"] => string(12) "星耀学园"    ["picPostTime"] => string(19) "2014-11-20 16:05:16"    ["pictureurl"] => string(55) "attachment/picture/uploadify/20141120/546da0784831c.png"  }}

用您这个处理完 都合并在一起了 我想是不同的标题的是不一样的 标题1 相同标题的都合并在一起 一个数组 标题2相同的合并在一起一个数组 就是图片链接pictureurl 这个进行合并 求大大指点 如何判断很多个标题里 判断标题是重复的呢 这个肯定是一个标题有多个重复的数组， 主要是区分去多个不同标题。

array ( 'picTitle' => '标题2,同步写入信息和附件表里', 'picCategroy' => '海报', 'picAuthor' => '星耀学园', 'picPostTime' => '2014-11-26 11:59:50,2014-11-20 16:05:16', 'pictureurl' => 'attachment/picture/uploadify/20141126/547550278b7db.jpg,attachment/picture/uploadify/20141126/54755027ab89b.jpg,attachment/picture/uploadify/20141126/547550273b753.jpg,attachment/picture/uploadify/20141126/54755027d8488.jpg,attachment/picture/uploadify/20141120/546da0746edb8.png,attachment/picture/uploadify/20141120/546da0784831c.png', )

$ar = array(  array(    "picTitle" => "标题2",    "picCategroy" => "海报",    "picAuthor" => "星耀学园",    "picPostTime" => "2014-11-26 11:59:50",    "pictureurl" => "attachment/picture/uploadify/20141126/547550278b7db.jpg",  ),  array(    "picTitle" => "标题2",    "picCategroy" => "海报",    "picAuthor" => "星耀学园",    "picPostTime" => "2014-11-26 11:59:50",    "pictureurl" => "attachment/picture/uploadify/20141126/54755027ab89b.jpg",  ),  array(    "picTitle" => "标题2",    "picCategroy" => "海报",    "picAuthor" => "星耀学园",    "picPostTime" => "2014-11-26 11:59:50",    "pictureurl" => "attachment/picture/uploadify/20141126/547550273b753.jpg",  ),  array(    "picTitle" => "标题2",    "picCategroy" => "海报",    "picAuthor" => "星耀学园",    "picPostTime" => "2014-11-26 11:59:50",    "pictureurl" => "attachment/picture/uploadify/20141126/54755027d8488.jpg",  ),  array(    "picTitle" => "同步写入信息和附件表里",    "picCategroy" => "海报",    "picAuthor" => "星耀学园",    "picPostTime" => "2014-11-20 16:05:16",    "pictureurl" => "attachment/picture/uploadify/20141120/546da0746edb8.png",  ),  array(    "picTitle" => "同步写入信息和附件表里",    "picCategroy" => "海报",    "picAuthor" => "星耀学园",    "picPostTime" => "2014-11-20 16:05:16",    "pictureurl" => "attachment/picture/uploadify/20141120/546da0784831c.png",  ),);$res = array();foreach($ar as $item) {  if(! isset($res[$item['picTitle']])) $res[$item['picTitle']] = $item;  else $res[$item['picTitle']]['pictureurl'] .= ',' . $item['pictureurl'];}var_export(array_values($res));

array (  0 =>   array (    'picTitle' => '标题2',    'picCategroy' => '海报',    'picAuthor' => '星耀学园',    'picPostTime' => '2014-11-26 11:59:50',    'pictureurl' => 'attachment/picture/uploadify/20141126/547550278b7db.jpg,attachment/picture/uploadify/20141126/54755027ab89b.jpg,attachment/picture/uploadify/20141126/547550273b753.jpg,attachment/picture/uploadify/20141126/54755027d8488.jpg',  ),  1 =>   array (    'picTitle' => '同步写入信息和附件表里',    'picCategroy' => '海报',    'picAuthor' => '星耀学园',    'picPostTime' => '2014-11-20 16:05:16',    'pictureurl' => 'attachment/picture/uploadify/20141120/546da0746edb8.png,attachment/picture/uploadify/20141120/546da0784831c.png',  ),)

随便写了下，没测试过，大楷是这么个思路

$ar = array(
array(
"picTitle" => "标题1",
"picCategroy" => "分类",
"picAuthor" => "作者",
"picPostTime" => "2014-11-20 16:05:16",
"pictureurl" => "attachment/picture/uploadify/20141120/546da0784831c.png",
),
array(
"picTitle" => "标题1",
"picCategroy" => "分类",
"picAuthor" => "作者",
"picPostTime" => "2014-11-20 16:05:16",
"pictureurl" => "attachment/picture/uploadify/20141120/546da0746edb8.png",
),
);

//标题=>数组索引数组
$map_arr=array();
foreach($ar as $key=>$item)
{
//判断是否在标题=>数组索引数组中
if(isset($map_arr[$item['picTitle']]))
{
//在的话合并
$ar[$key]=array_merge($ar[$key],$map_arr[$item['picTitle']]);
}
else
{
//不在的话存入映射索引
$map_arr[$item['picTitle']]=$item;
unset($ar[$key]); //删除原来在数组存在的值
}
}

补充下 unset($ar[$key]); //删除原来在数组存在的值
这句移动到这个下面，疏忽写错了
//在的话合并
$ar[$key]=array_merge($ar[$key],$map_arr[$item['picTitle']]);

$arr = array(  array(    "picTitle" => "标题1",    "picCategroy" => "分类",    "picAuthor" => "作者",    "picPostTime" => "2014-11-20 16:05:16",    "pictureurl" => "attachment/picture/uploadify/20141120/546da0784831c.png",  ),  array(    "picTitle" => "标题1",    "picCategroy" => "分类",    "picAuthor" => "作者",    "picPostTime" => "2014-11-20 16:05:16",    "pictureurl" => "attachment/picture/uploadify/20141120/546da0746edb8.png",  ));$item=array();foreach($arr as $key=>$value){    foreach($value as $k=>$v){        if(!isset($item[$k])){            $item[$k]=$v;        }    }}print_r($item);

$ar = array(  array(    "picTitle" => "标题2",    "picCategroy" => "海报",    "picAuthor" => "星耀学园",    "picPostTime" => "2014-11-26 11:59:50",    "pictureurl" => "attachment/picture/uploadify/20141126/547550278b7db.jpg",  ),  array(    "picTitle" => "标题2",    "picCategroy" => "海报",    "picAuthor" => "星耀学园",    "picPostTime" => "2014-11-26 11:59:50",    "pictureurl" => "attachment/picture/uploadify/20141126/54755027ab89b.jpg",  ),  array(    "picTitle" => "标题2",    "picCategroy" => "海报",    "picAuthor" => "星耀学园",    "picPostTime" => "2014-11-26 11:59:50",    "pictureurl" => "attachment/picture/uploadify/20141126/547550273b753.jpg",  ),  array(    "picTitle" => "标题2",    "picCategroy" => "海报",    "picAuthor" => "星耀学园",    "picPostTime" => "2014-11-26 11:59:50",    "pictureurl" => "attachment/picture/uploadify/20141126/54755027d8488.jpg",  ),  array(    "picTitle" => "同步写入信息和附件表里",    "picCategroy" => "海报",    "picAuthor" => "星耀学园",    "picPostTime" => "2014-11-20 16:05:16",    "pictureurl" => "attachment/picture/uploadify/20141120/546da0746edb8.png",  ),  array(    "picTitle" => "同步写入信息和附件表里",    "picCategroy" => "海报",    "picAuthor" => "星耀学园",    "picPostTime" => "2014-11-20 16:05:16",    "pictureurl" => "attachment/picture/uploadify/20141120/546da0784831c.png",  ),);$res = array();foreach($ar as $item) {  if(! isset($res[$item['picTitle']])) $res[$item['picTitle']] = $item;  else $res[$item['picTitle']]['pictureurl'] .= ',' . $item['pictureurl'];}var_export(array_values($res));

array (  0 =>   array (    'picTitle' => '标题2',    'picCategroy' => '海报',    'picAuthor' => '星耀学园',    'picPostTime' => '2014-11-26 11:59:50',    'pictureurl' => 'attachment/picture/uploadify/20141126/547550278b7db.jpg,attachment/picture/uploadify/20141126/54755027ab89b.jpg,attachment/picture/uploadify/20141126/547550273b753.jpg,attachment/picture/uploadify/20141126/54755027d8488.jpg',  ),  1 =>   array (    'picTitle' => '同步写入信息和附件表里',    'picCategroy' => '海报',    'picAuthor' => '星耀学园',    'picPostTime' => '2014-11-20 16:05:16',    'pictureurl' => 'attachment/picture/uploadify/20141120/546da0746edb8.png,attachment/picture/uploadify/20141120/546da0784831c.png',  ),)

谢谢版主大人 解决了 只不过最后的这个var_export函数去掉 就是我要的结果了~