Ask for a PHP call code

Look at the picture and talk.

Suppose the above is a table:
The table contains information ID and user UID and a specific PID

How to determine the PID of other bar information when looping the loop call variable (the red box is the ID of the current information)

When I call, I judge.

{Loop $list} ... {if $id = = $pid} .... {/if} ..... {/loop}

is judged to be the current information ID is the same as the PID. The key is that the PID and ID are definitely not in the information data of an ID, the PID is for the ID

The code, that's what I wrote.

{/loop}

The results shown are
1-8-25
2-3-36
3-12-1
It's not wrong. Output correct

I want the result that the third PID is equal to the ID of the first one to show him below the first one.
How to write code, to be free

Reply to discussion (solution)

In fact, I wrote a message.
The ID is the message ID used for the deletion of information, the UID is the author ID of the message, as well as the message content, time and other fields will not say.

The most important is the PID, is automatically generated, is to give the first few information reply,

I'd like to leave a message with a message ID of 1 and let him display it under this message. Do not know how to operate. Hey

Two arrays, an array a (key value is ID) sorted by ID, and an array b sorted by PID (the key value is PID).
A array of key values: 1, 2, 3, 6, 8 ...
B Array Key value: 1, 3, 34, 35 ...
Each time the data is taken from the beginning of the two array, a pointer is taken to 1 output, then the first of B, and 1, output. The second one refers to the 2 output, B Gets the discovery is 3, does not output. Again take a 3 output, see B again, found also 3 output.

Array sorting is carried out using PHP's own method of complexity of about O (NLGN), traversing two array complexity O (n).

Two arrays, an array a (key value is ID) sorted by ID, and an array b sorted by PID (the key value is PID).
A array of key values: 1, 2, 3, 6, 8 ...
B Array Key value: 1, 3, 34, 35 ...
Each time the data is taken from the beginning of the two array, a pointer is taken to 1 output, then the first of B, and 1, output. The second one refers to the 2 output, B Gets the discovery is 3, does not output. Again take a 3 output, see B again, found also 3 output.

Array sorting is carried out using PHP's own method of complexity of about O (NLGN), traversing two array complexity O (n).

Each message contains ID and PID this loop is good but the PID is also read when the key is the ID

{loop $list $val} comment {$val [' id ']}{loop $list $val 1}{if $val [' id ']== $val 1[' pid '} reply comment {$val [' id '} ' comment {/if}{/loop}{/loop }

Not tested, you can see.

$SQLSTR = "SELECT * FROM table", $query = mysql_query ($sqlstr) or Die (Mysql_error ()), while ($thread =mysql_fetch_assoc ($ Query) {    $result [] = $thread;} foreach ($result as $key + $val) {    if (isset ($ret [$val [' pid]]) {Array_push ($ret [$val [        ' pid ']], $val);    } else{        $ret [$val [' pid ']] = array ($val);}    } Print_r ($ret);

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