Hi I need to select a rand value in the array removed and short the array i came out whit this small code but it keeps in an infinite loop but this is the weird look
<?php
$array=array("1","2","3","4","5","6","7","8","9","0");
$count=count($array);
for ($il=1;$il<=$count;$il++){
$array_value=array_rand($array, 1);
$array_value_key = array_search($array_value, $array);
$array_key_last=array_key_last($array);
for($if=0;$if<=$array_key_last;$if++){
if ($if==$array_value_key){
for($ia=$array_value_key;$ia<=$array_key_last;$ia++){
if ($ia<$array_key_last){
$ian=$ia+1;
$array[$ia]=$array[$ian];
}else{
unset($array[$ia]);
}
}
}
}
print_r($array);
}
?>
there the output can be different each time likes this but never ends
Array
(
[0] => 1
[1] => 2
[2] => 3
[3] => 5
[4] => 6
[5] => 7
[6] => 8
[7] => 9
[8] => 0
)
Array
(
[0] => 2
[1] => 3
[2] => 5
[3] => 6
[4] => 7
[5] => 8
[6] => 9
[7] => 0
)
^C
and i have to break it but as you can see in the first loop work as expected removes the number 4 and in the second loop removes the number 1 but don't finish the third loop
I have reviewed many times and get in to the conclusion of the problem it is on the line
$array[$ia]=$array[$ian];
if i add a echo here get printing a number it self to the infinity why?
$array[$ia]=$array[$ian];
echo $array[$ia],"\n";
The Problem is not in one line. It takes a few commands to interact:
array_rand returns the key of the element not the value
array_search returns (bool)false if it doesn't find the value (because of 1 this can happen)
You use $array_value_key to start a for loop. Because of 2 it can be (bool)false.
When you increment a boolean, it does not change. I.e. your $ia++ does nothing.
That's why $ia<=$array_key_last will never turn false and your loop runs forever.
I have a column pack_size in a table called product_master_test. The problem that I am facing is that the pack_size is in mixed formats, there is no uniformity to it.
For example:
4 x 2kg (pack size should be 4)
48-43GM (pack size should be 48)
12 x 1BTL (pack size should be 12)
1 x 24EA (pack size should be 24)
I've been thinking about different approaches, but I can't think of anything that would work without having a lot of IF statements in the query/PHP code. Is there a solution that I am missing?
I do have the file in Excel, if there is an easier way to process it using PHP.
I am not including any code, as I'm not entirely sure where to start with this problem.
Using a regex to split the pack size could at least give you the various components which you can then (possibly) infer more from...
$packs = ["4 x 2kg","48-43GM","12 x 1BTL","1 x 24EA", "12 X 1 EA"];
foreach ( $packs as $size ) {
if ( preg_match("/(\d*)(?:\s+)?[xX-](?:\s+)?(\d+)(?:\s+)?(\w*)/", $size, $match) == 1 ) {
print_r($match);
}
else {
echo "cannot determine - ".$size.PHP_EOL;
}
}
(regex can probably be optimised, not my area of expertise). It basically splits it to be a number, some space with either a x or a - and then another number followed by the units (some text). The above with the test cases gives...
Array
(
[0] => 4 x 2kg
[1] => 4
[2] => 2
[3] => kg
)
Array
(
[0] => 48-43GM
[1] => 48
[2] => 43
[3] => GM
)
Array
(
[0] => 12 x 1BTL
[1] => 12
[2] => 1
[3] => BTL
)
Array
(
[0] => 1 x 24EA
[1] => 1
[2] => 24
[3] => EA
)
Array
(
[0] => 12 X 1 EA
[1] => 12
[2] => 1
[3] => EA
)
With the else part it should also give you the ones it cannot determine and perhaps allow you to change it accordingly.
You could present an associative array of all the strings from the table as keys corresponding with correct pack_size you desire.
$packsize = ["4 x 2kg" => 4, "48-43GM" => 48, "12 x 1BTL" => 12, "1 x 24EA" => 24]; //add all pack_sizes here
echo $packsize["4 x 2kg"]; // Output: 4
Now you could get the acutal pack size via the key of associative array. It could save some time you would spend making if/else conditions or switching the input. I'm not sure if there is something wrong with this approach, so correct me if so.
i've a string like
$input="16°28'60,00''"
thats is on my db and stored as TEXT utf8_general_ci
im trying to convert it to decimal/lat-long system. So I write a function that splice the input and convert it.
Im using $input as an array, and when is on position 2, I have a strange result thats broke my function:
$input[2]---> 'b"Â"'
in position 2 there is the "°"
the next row check if esist "°" but due this error can works
if($tempD == iconv("UTF-8", "ISO-8859-1//TRANSLIT", '°')
how can i fix that?
If the format of the DB string is always the same, just grab the digits out and you don't need to bother with the degrees, minutes, seconds.
$input = "16°28'60,00''";
preg_match_all("/(\d+)/", $input, $match);
print_r($match);
Output:
Array
(
[0] => Array
(
[0] => 16
[1] => 28
[2] => 60
[3] => 00
)
[1] => Array
(
[0] => 16
[1] => 28
[2] => 60
[3] => 00
)
)
Now you have each digit and you can convert it easily.
Can the preg_match() function include groups it did not find in the matches array?
Here is the pattern I'm using:
/^([0-9]+)(.[0-9]+)?\s?([^iIbB])?([iI])?([bB])?$/
What I'm trying to is parse an human readable size into bytes. This pattern fits my requirement, but only if I can retrieve matches in the absolute group order.
This can produce upto 5 match groups, which would result in a matches array with indices 0-5. However if the string does not match all groups, then the matches array may have, for example, group 5 actually at index 3.
What I'd like is the final match in that pattern (5) to always be at the same index of the matches array. Because multiple groups are optional it's very important that when reading the matches array we know which group in the expression got matched.
Example situation: The regex tester at regexr.com will show all 5 groups including those not matched always in the correct order. By enabling the "global" and "multi-line" flags and using the following text, you can hover over the blue matches for a good visual.
500.2 KiB
256M
700 Mb
1.2GiB
You'll notice that not all groups are always matched, however the group indexes are always in the correct order.
Edit: Yes I did already try this in PHP with the following:
$matches = [];
$matchesC = 0;
$matchesN = 6;
if (!preg_match("/^([0-9]+)(\.[0-9]+)?\s?([^iIbB])?([iI])?([bB])?$/", $size, $matches) || ($matchesC = count($matches)) < $matchesN) {
print_r($matches);
throw new \Exception(sprintf("Could not parse size string. (%d/%d)", $matchesC, $matchesN));
}
When $size is "256M" that print_r($matches); returns:
Array
(
[0] => 256M
[1] => 256
[2] =>
[3] => M
)
Groups 4 and 5 are missing.
The non-participating groups are just not initialized with an empty string value in PHP, so, Group 4 and 5 are null in case of '256M' string. It seems that preg_match discards those non-initialized values from the end of the array.
In your case, you can make your capturing groups non-optional, but the patterns inside optional.
$arr = array('500.2 KiB', '256M', '700 Mb', '1.2GiB');
foreach ($arr as $s) {
if (preg_match('~^([0-9]+)(\.[0-9]+)?\s?([^ib]?)(i?)(b?)$~i', $s, $m)) {
print_r($m) . "\n";
}
}
Output:
Array
(
[0] => 500.2 KiB
[1] => 500
[2] => .2
[3] => K
[4] => i
[5] => B
)
Array
(
[0] => 256M
[1] => 256
[2] =>
[3] => M
[4] =>
[5] =>
)
Array
(
[0] => 700 Mb
[1] => 700
[2] =>
[3] => M
[4] =>
[5] => b
)
Array
(
[0] => 1.2GiB
[1] => 1
[2] => .2
[3] => G
[4] => i
[5] => B
)
See the PHP demo.
You can use T-Regx which can handle such cases with ease! It always checks whether a group is matched, even if it's last and unmatched. It also can differentiate between "" (matched empty) or null (unmatched):
pattern('^([0-9]+)(.[0-9]+)?\s?([^iIbB])?([iI])?([bB])?$')
->match($size)
->first(function (Match $match) {
// whether the group was used in a pattern
$match->hasGroup(14);
// whether the group was matched, even if last or empty string
$match->matched(5);
// group, or default value if not matched
$match->group(5)->orReturn('unmatched');
});
I have this array that I am displaying with a table how can i use user input for movement
currently 0 is assigned to every array but I plan on assigning other values to the array:
my question is - how can i move up, down, right, left, and move diagonally within the array using user input
Array ( [0] => Array ( [0] => 0 [1] => 0 [2] => 0 [3] => 0 [4] => 0 [5] => 0 [6] => 0 [7] => 0 )
[1] => Array ( [0] => 0 [1] => 0 [2] => 0 [3] => 0 [4] => 0 [5] => 0 [6] => 0 [7] => 0 )
[2] => Array ( [0] => 0 [1] => 0 [2] => 0 [3] => 0 [4] => 0 [5] => 0 [6] => 0 [7] => 0 )
[3] => Array ( [0] => 0 [1] => 0 [2] => 0 [3] => 0 [4] => 0 [5] => 0 [6] => 0 [7] => 0 )
[4] => Array ( [0] => 0 [1] => 0 [2] => 0 [3] => 0 [4] => 0 [5] => 0 [6] => 0 [7] => 0 )
[5] => Array ( [0] => 0 [1] => 0 [2] => 0 [3] => 0 [4] => 0 [5] => 0 [6] => 0 [7] => 0 )
[6] => Array ( [0] => 0 [1] => 0 [2] => 0 [3] => 0 [4] => 0 [5] => 0 [6] => 0 [7] => 0 )
[7] => Array ( [0] => 0 [1] => 0 [2] => 0 [3] => 0 [4] => 0 [5] => 0 [6] => 0 [7] => 0 )
);
array(0,0,0,0,0,0,0,0),
array(0,0,0,0,0,0,0,0),
array(0,0,0,0,0,0,0,0),
array(0,0,0,0,0,0,0,0),
array(0,0,0,0,0,0,0,0),
array(0,0,0,0,0,0,0,0),
array(0,0,0,0,0,0,0,0),
array(0,0,0,0,0,0,0,0),
It is for a checkers game no mysql.
I can already serialize the array into text file, but the text files needs to contain the start position and when each player makes a move put the location the piece move to in the text file then call back to the display
and I have already displayed the array into an html table
I am also trying to restrict movement to illegal square but that's a logic problem i need work on myself
will this loop work with code below
$row = 0;
print "<form>";
print "<table border = 1>";
while ($row < 8){ // Counts to 8. (from 0...7 = 8 times. 0 ... 8 = 9 times)
print "<tr>";
$row++;
$col = 0; // reset column to 0 each time printing one row.
while ($col < 8){
print "<td>";
if($board[$row][$col] == 0)
{
print "<input type=\"checkbox\" name=\"box[]\" value=\"$value\">";
// Add \ before " otherwise it will treat as the end of the quote.
}
print "</td>";
$col++;
}
print "</tr>";
}
print "</table>";
print "</form>";
I already created a database for keeping score but that will be finished after this
You need to define the available movement for the game, in this case, from the players point of view you can say that a player can move it's piece:
up-left
up-right
up-left-up-left
up-right-up-right
Note that the two last elements of the list are those of one piece eating another one. Once you know that you can take the current position of the piece and move it to the new one. I'm going to assume that for normal pieces you would use "N" and for queens "Q" although I will not use queens in my examples.
I will use a normal move and then an actual eating one:
//Piece at $board[$x][$y] moves diagonally to the left.
$board[$x-1][$y+1] = $board[$x][$y]; // This space is occupied
$board[$x][$y] = 0; //Now the space is empty
Now for the eating part. Lets imagine that the piece on $board[$x][$y] wants to eat the one that's in diagonally left.
//Eating action from $board[$x][$y]
$board[$x-1][$y+1] = 0; //It's been eaten!
$board[$x-2][$y+2] = $board[$x][$y]; // This space is occupied
So you could get an input from the user that included, the piece he wants to move, and what kind of movements he wants to do (I'm assuming, you will only allow the correct moves so I will not get into that). If you are reading it from a form submit for example you could get the movement, the position and the player (for orientation) as $_POST variables.
Then depending on those values modify the $board array. To do so, you could use conditionals or a switch, that's up to you.
$way = ($_POST['player'] === 'up')? 1:-1;
That last line will allow you to re-use the same code for the movements, multiplying the values you have to add to the current position to get to the new one, by the $way variable. For instance, going diagonally left would be:
//if player is 'up' then the value of $way is 1 so
$board[$x+(-1*$way)][$y+(1*$way)] = $board[$x][$y]; // position 2,2 becomes 1,3
//if player is not 'up' then the value of $way is -1 so
$board[$x+(-1*$way)][$y+(1*$way)] = $board[$x][$y]; // position 2,2 becomes 3,1
This should give you a starting point, all code was un-tested so I guess there may be some typos.
UPDATE
If all you want is to move from X,Y to X1Y1 then:
$board[$var3][$var4] = $board[$var1][$var2];
$board[$var1][$var2] = 0;
Is about all you need. :)
You can access every field of the board using its coordinates:
$array[$y][$x]
So, if you want to move something up, you can simply do:
$array[$y-1][$x] = $array[$y][$x];
$array[$y][$x] = 0;
I guess first you should fill with 1 and 2 the cells corresponding to each type of tile. Then you can assign numbers 3 and 4 to the ones that are coronated.
1.You can ask each player for example staring x,y and ending x,y
Then for doing a movment you first need to check it is allowed. Obviously starting $array[$x][$y] for player 1 should contain a 1. Then You need to make rules for this, For example if you are player 1 you can only go from $array[$x][$y] to $array[$x-1][$x-1], $array[$x-1][$y*1], etc when the place you wanna go is empty (filled with 0) Then you can check if more complicated moves are allowed like eating other player tile (which requires for example if you are player 1 to check things like $array[$x-2][$y-2] equals 0 and $array[$x-1][$y-1] equals 2. Then there is a series of more complicated verifications for the coronated ones that you should write. (besides always remember that you are moving within the limits of the array dimensions).
Finally you should alter the array cells that should be modified with the corresponding new values.