PHP - Searching For A Given Value In An Array.

I am including my test.php for other to run.

I have a very large array of concatenated hash values. I have another array that contains the first 8 hash values of the other array. I have a function to locate them in the larger array. Depending on their index value I then choose the index of the value before or behind them for adding to something else later. This 'computeWalk' method works for small arrays but for larger arrays I notice duplicates or errors with larger ones.

For example.

The first array returns:
Array ( => 1 [1] => 18 [2] => 18 [3] => 35 [4] => 33 [5] => 33 )
The values for i's to get each of these values are
I = 0
I = 19
I = 29
I = 34
I = 37
I = 39

Walking through the method by hand,
0%2 = 0
So the first element of the array will be 1. CORRECT.
19%2 = 1
So the next element will be 18. CORRECT.
29%2 = 1
The next element should be 28. It returns 18.
34%2 = 0
The next element will be 35. Correct.
37%2 = 1
The next element should be 36. It returns 33.
39%2 = 1
The next element should be 38. It returns 33.

I am not sure why it's doing the above.
I also tried array_search and it computed it the same way.

Would appreciate any help.


<?php
$arrayTree = array();
$arrayTree[0] = "9d027b1c4068d81287c9170f4b291387f8327eb7";
$arrayTree[1] = "4c8fabdc24c2d8205db916a22e9459195833a272";
$arrayTree[2] = "209526afab9e85b54e1832a820a7f578b7760af0";
$arrayTree[3] = "59d6926525e941edca99493b2b2a4f0a6efcb757";
$arrayTree[4] = "c8b49b8e414a09ddb693c580ecdfa6793c845f9d";
$arrayTree[5] = "b207bea6c4833d90f6ee4e694ffb148c046b0eb3";
$arrayTree[6] = "6d72a84b3aefbd3766078ed17a19aebb0c4ae026";
$arrayTree[7] = "b00207b8944520ea3817334615a7cdbf8214232a";
$arrayTree[8] = "d934f53af9bee26f35df7206dc06211778996986";
$arrayTree[9] = "de2ecd02fd017b0311dbfe589b5faa7954ced196";
$arrayTree[10] = "7d9752d09d3097fac748b6767472f9b69a65ed2e";
$arrayTree[11] = "62630fe109b42747b4c53065ec96aabf7b14d7b6";
$arrayTree[12] = "d727b5b8ffaeadbac75123801c270fd65f19251c";
$arrayTree[13] = "e39a9141fd9ce9426e88f30b6f245fdbb8f887a5";
$arrayTree[14] = "85fe053baa7ccf469c440a7dd98381228a0c52c3";
$arrayTree[15] = "6199634d410d0c91fd6ff99af9eabd5a1c7911de";
$arrayTree[16] = "af594de7d539519445013b7c87f02edbf3c44653";
$arrayTree[17] = "b6eb6dab75d092f4be345925ccbf87ff1e17fc31";
$arrayTree[18] = "2163ca6b0a608242712af82a81599f1f95c26dee";
$arrayTree[19] = "9d027b1c4068d81287c9170f4b291387f8327eb74c8fabdc24c2d8205db916a22e9459195833a272";
$arrayTree[20] = "209526afab9e85b54e1832a820a7f578b7760af059d6926525e941edca99493b2b2a4f0a6efcb757";
$arrayTree[21] = "c8b49b8e414a09ddb693c580ecdfa6793c845f9db207bea6c4833d90f6ee4e694ffb148c046b0eb3";
$arrayTree[22] = "6d72a84b3aefbd3766078ed17a19aebb0c4ae026b00207b8944520ea3817334615a7cdbf8214232a";
$arrayTree[23] = "d934f53af9bee26f35df7206dc06211778996986de2ecd02fd017b0311dbfe589b5faa7954ced196";
$arrayTree[24] = "7d9752d09d3097fac748b6767472f9b69a65ed2e62630fe109b42747b4c53065ec96aabf7b14d7b6";
$arrayTree[25] = "d727b5b8ffaeadbac75123801c270fd65f19251ce39a9141fd9ce9426e88f30b6f245fdbb8f887a5";
$arrayTree[26] = "85fe053baa7ccf469c440a7dd98381228a0c52c36199634d410d0c91fd6ff99af9eabd5a1c7911de";
$arrayTree[27] = "af594de7d539519445013b7c87f02edbf3c44653b6eb6dab75d092f4be345925ccbf87ff1e17fc31";
$arrayTree[28] = "2163ca6b0a608242712af82a81599f1f95c26dee";
$arrayTree[29] = "9d027b1c4068d81287c9170f4b291387f8327eb74c8fabdc24c2d8205db916a22e9459195833a272209526afab9e85b54e1832a820a7f578b7760af059d6926525e941edca99493b2b2a4f0a6efcb757";
$arrayTree[30] = "c8b49b8e414a09ddb693c580ecdfa6793c845f9db207bea6c4833d90f6ee4e694ffb148c046b0eb36d72a84b3aefbd3766078ed17a19aebb0c4ae026b00207b8944520ea3817334615a7cdbf8214232a";
$arrayTree[31] = "d934f53af9bee26f35df7206dc06211778996986de2ecd02fd017b0311dbfe589b5faa7954ced1967d9752d09d3097fac748b6767472f9b69a65ed2e62630fe109b42747b4c53065ec96aabf7b14d7b6";
$arrayTree[32] = "d727b5b8ffaeadbac75123801c270fd65f19251ce39a9141fd9ce9426e88f30b6f245fdbb8f887a585fe053baa7ccf469c440a7dd98381228a0c52c36199634d410d0c91fd6ff99af9eabd5a1c7911de";
$arrayTree[33] = "af594de7d539519445013b7c87f02edbf3c44653b6eb6dab75d092f4be345925ccbf87ff1e17fc312163ca6b0a608242712af82a81599f1f95c26dee";
$arrayTree[34] = "9d027b1c4068d81287c9170f4b291387f8327eb74c8fabdc24c2d8205db916a22e9459195833a272209526afab9e85b54e1832a820a7f578b7760af059d6926525e941edca99493b2b2a4f0a6efcb757c8b49b8e414a09ddb693c580ecdfa6793c845f9db207bea6c4833d90f6ee4e694ffb148c046b0eb36d72a84b3aefbd3766078ed17a19aebb0c4ae026b00207b8944520ea3817334615a7cdbf8214232a";
$arrayTree[35] = "d934f53af9bee26f35df7206dc06211778996986de2ecd02fd017b0311dbfe589b5faa7954ced1967d9752d09d3097fac748b6767472f9b69a65ed2e62630fe109b42747b4c53065ec96aabf7b14d7b6d727b5b8ffaeadbac75123801c270fd65f19251ce39a9141fd9ce9426e88f30b6f245fdbb8f887a585fe053baa7ccf469c440a7dd98381228a0c52c36199634d410d0c91fd6ff99af9eabd5a1c7911de";
$arrayTree[36] = "af594de7d539519445013b7c87f02edbf3c44653b6eb6dab75d092f4be345925ccbf87ff1e17fc312163ca6b0a608242712af82a81599f1f95c26dee";
$arrayTree[37] = "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";
$arrayTree[38] = "af594de7d539519445013b7c87f02edbf3c44653b6eb6dab75d092f4be345925ccbf87ff1e17fc312163ca6b0a608242712af82a81599f1f95c26dee";
$arrayTree[39] = "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";
$arrayTree[40] = "54u58rfhfheyrr4gfdtfvgw36tr36";
$arrayTree[41] = "54u58rfhfheyrr4gfdtfvgw36tr369d027b1c4068d81287c9170f4b291387f8327eb74c8fabdc24c2d8205db916a22e9459195833a272209526afab9e85b54e1832a820a7f578b7760af059d6926525e941edca99493b2b2a4f0a6efcb757c8b49b8e414a09ddb693c580ecdfa6793c845f9db207bea6c4833d90f6ee4e694ffb148c046b0eb36d72a84b3aefbd3766078ed17a19aebb0c4ae026b00207b8944520ea3817334615a7cdbf8214232ad934f53af9bee26f35df7206dc06211778996986de2ecd02fd017b0311dbfe589b5faa7954ced1967d9752d09d3097fac748b6767472f9b69a65ed2e62630fe109b42747b4c53065ec96aabf7b14d7b6d727b5b8ffaeadbac75123801c270fd65f19251ce39a9141fd9ce9426e88f30b6f245fdbb8f887a585fe053baa7ccf469c440a7dd98381228a0c52c36199634d410d0c91fd6ff99af9eabd5a1c7911deaf594de7d539519445013b7c87f02edbf3c44653b6eb6dab75d092f4be345925ccbf87ff1e17fc312163ca6b0a608242712af82a81599f1f95c26dee";


$arrayDocs = array();
$arrayDocs[0] = "9d027b1c4068d81287c9170f4b291387f8327eb7";
$arrayDocs[1] = "4c8fabdc24c2d8205db916a22e9459195833a272";
$arrayDocs[2] = "209526afab9e85b54e1832a820a7f578b7760af0";
$arrayDocs[3] = "59d6926525e941edca99493b2b2a4f0a6efcb757";
$arrayDocs[4] = "c8b49b8e414a09ddb693c580ecdfa6793c845f9d";
$arrayDocs[5] = "b207bea6c4833d90f6ee4e694ffb148c046b0eb3";
$arrayDocs[6] = "6d72a84b3aefbd3766078ed17a19aebb0c4ae026";
$arrayDocs[7] = "b00207b8944520ea3817334615a7cdbf8214232a";
$arrayDocs[8] = "d934f53af9bee26f35df7206dc06211778996986";
$arrayDocs[9] = "de2ecd02fd017b0311dbfe589b5faa7954ced196";
$arrayDocs[10] = "7d9752d09d3097fac748b6767472f9b69a65ed2e";
$arrayDocs[11] = "62630fe109b42747b4c53065ec96aabf7b14d7b6";
$arrayDocs[12] = "d727b5b8ffaeadbac75123801c270fd65f19251c";
$arrayDocs[13] = "e39a9141fd9ce9426e88f30b6f245fdbb8f887a5";
$arrayDocs[14] = "85fe053baa7ccf469c440a7dd98381228a0c52c3";
$arrayDocs[15] = "6199634d410d0c91fd6ff99af9eabd5a1c7911de";
$arrayDocs[16] = "af594de7d539519445013b7c87f02edbf3c44653";
$arrayDocs[17] = "b6eb6dab75d092f4be345925ccbf87ff1e17fc31";
$arrayDocs[18] = "2163ca6b0a608242712af82a81599f1f95c26dee";


foreach($arrayDocs as $doc) {
 $bitIndex = computeWalk($arrayTree, $doc);
 echo "<br/>";
        print_r($bitIndex);

echo "<br/>";
}

function computeWalk($array, $needle) {
    $result = array();

    for ($i = 0; $i < count($array) - 1; $i++) {
        if (false !== strpos($array[$i], $needle)) {

 echo " I = ".$i;
            if ($i % 2 == 0) {
                $result[] = getItemIndex($array[$i + 1], $array);
            } else {
                $result[] = getItemIndex($array[$i - 1], $array);
            }
        }
    }
    return $result;
}


function getItemIndex($item, $array) {
$myPosition=-1;
for ($i = 0; $i<count($array)-1; $i++) {
if($array[$i]==$item) {
$myPosition = $i;
break;
}
}
return $myPosition;
}
?>

I am having trouble searching for an item in a multi-dimensional array.

Is there a way to search only one column in a multi-dimensional array?

i.e:

MULTI-DIMENSIONAL ARRAY

ID  Name  DataTable
0   John  Employee
1   Dan   Employee
2   Matt  Boss
3   Becky Supervisor


Is there a way to only search the column "Name"(Column 2) using array_search() or similar? (i.e array_search("John",$ARRAY[Column2])

The help would be very much appreciated!

Cheers, Dan 

Hey guys, im trying to select only certain rows that matchs the address in a array. Not sure how to do this

This is making the array
$siege_check3 = "SELECT address FROM planets WHERE siege='".mysql_real_escape_string($_SESSION['goauld'])."'"; 
$siege_check2 = mysql_query($siege_check3) or die(mysql_error());
$arr = array();
while($siege_check1 = mysql_fetch_array($siege_check2)) {

$siege_planets = $siege_check1['address'];

$arr[] = $siege_planets;
} 
Then I want to AND grab rows where defender_planet equals one of the address in the array above
tried using in_array but telling me its not a valid function

             $alert3 = "SELECT * FROM travel WHERE defender_id = '" .($_SESSION['user_id'])."' 
             AND stance = 2 AND stealth_tech < '".($stealth_tech)."' 
             AND address=  in_array(defender_planet,$arr) ORDER BY arrived_time DESC"; 

             $alert2 = mysql_query($alert3) or die(mysql_error());

while($alert1 = mysql_fetch_assoc($alert2)) {

}   

I have a array of file path strings and trying to search the array for a string that would be the end of the path sting and return the index of the file path that contains the string. I've tried using something like this, but it finds the keyword in anyplace in the file path. I've also tried strripos() as well with the same results. Any suggestions?

function array_search_partial($arr, $keyword) {
    foreach ($arr as $index => $string) {
			if(strpos($string, $keyword) !== FALSE) {
				return $index;
			}
    }
}

 

Hi guys,

I'm trying to search an array to show if a user is attending an event ID and output "You are attending this event".

I need to search the array 'data', then all the numbers, then check if the 'id' matches and if they 'attending' or 'not attending'.

I have figured out how to search the array using:

<?php
echo ((in_array('107510232628186', $movies['data'][]['id']))? 'You are attending the event' : 'You are not attending the event');
?> 

but it only outputs an error as I don't know how to search all the middle numbered arrays.

Here is my array:

Code: [Select]
Array
(
    [data] => Array
        (
            [0] => Array
                (
                    [name] => Test2
                    [id] => 137233316308949
                    [rsvp_status] => attending
                )

            [1] => Array
                (
                    [name] => Party Animals
                    [id] => 107510232628186
                    [rsvp_status] => attending
                )

            [2] => Array
                (
                    [name] => Ibiza Opening Party @ EDEN [TICKETS]
                    [id] => 111456325542560
                    [rsvp_status] => attending
                )

        )
Think I'm probably missing a trick here, as it seems like it should be simple!

Hope someone can help