I got this array:
array (
0 => 'K.',
1 => 'Vrachtschip',
2 => 'L.',
3 => 'Gevechtsschip',
4 => 'Z.',
5 => 'Gevechtsschip',
6 => 'Kruiser',
7 => 'Slagschip',
8 => 'Bommenwerper',
9 => 'Vernietiger',
10 => 'Interceptor.',
)
of can I merge the items [0] with [1], because K. vrachtschip must be together.
same ass [2] and [3]; and [4] with [5]. if there is 1 letter and then a dot (k.) it must be merged with the following array item.
Anyone that can help me :)?
How about:
$arr = array (
'K.',
'Vrachtschip',
'L.',
'Gevechtsschip',
'Z.',
'Gevechtsschip',
'Kruiser',
'Slagschip',
'Bommenwerper',
'Vernietiger',
'Interceptor',
'B.',
);
$concat = '';
$result = array();
foreach ($arr as $elem) {
if (preg_match('/^[A-Z]\.$/', $elem)) {
$concat = $elem;
continue;
}
$result[] = $concat.$elem;
$concat = '';
}
if ($concat) $result[] = $concat;
print_r($result);
output:
Array
(
[0] => K.Vrachtschip
[1] => L.Gevechtsschip
[2] => Z.Gevechtsschip
[3] => Kruiser
[4] => Slagschip
[5] => Bommenwerper
[6] => Vernietiger
[7] => Interceptor
[8] => B.
)
Try to use a regular expression to test all entries of your array.
If an occurence is founded, concat the value of your entrie with the next.
I would try something like this:
for($idx=0, $max = count($array_in); $idx < $max; $idx++)
{
if(preg_match('/^[a-z]\.$/i', $array_in[$idx]))
{
$array_out[] = $array_in[$idx].$array_in[$idx+1];
$idx++;
}
else
{
$array_out[] = $array_in[$idx];
}
}
I'd probably do the following (pseudo code):
Create empty array for result
Iterate the original array
For each value: does it match /^[a-z]\.$/i?
If yes, see if original array contains a next element?
If yes, concatenate the two items and add to resulting array, skip next item in loop
If no (pt. 4 or 5) add directly to resulting array.
Related
I have a quiz where you can use text field or radio buttons for the answers. The answers are stored in a database. None of the answers are required so people can skip questions.
Each entry is stored in a row:
Array
(
[0] => Array
(
[0] => Dave
[1] => ok
[2] => Manchester
[3] => No
)
[1] => Array
(
[0] => James
[1] => Happy
[2] => London
[3] => Yes
)
[2] => Array
(
[0] => Victoia
[2] => Leeds
)
)
Currently the question number is represented by the key. So Victoria hasn't answered question 1 or 3. My aim is to add the unanswered into the array witht the correct key value being null.
Here is my code so far but I'm struggling to get the array key position correct:
$answersArr = (array) $answers;
$row = array();
$items = array();
$numberOfQuesitons = count($headers);
foreach ($answersArr as $key=>$result) {
$answer = json_decode(stripslashes($result->answers));
$row[$key] = (array) $answer;
$single = count($row[$key]);
$currentKey = key($row[$key]);
for ($i = $single ; $i < $numberOfQuesitons; $i++) {
if ($numberOfQuesitons - $i > 0) {
if ($currentKey > 0) {
array_unshift($row[$key], null);
} else {
array_push($row[$key], null);
}
}
}
}
print_r($row);
The out put I get:
Array
(
[0] => Array
(
[0] => Admin
[1] => ok
[2] => Manchester
[3] => No
)
[1] => Array
(
[0] => Rod
[1] => Happy
[2] => London
[3] => Yes
)
[2] => Array
(
[0] => Rozi
[2] => Leeds
[3] =>
[4] =>
)
)
The last row in the array needs to look like this:
[2] => Array
(
[0] => Victoia
[1] =>
[2] => Somewhere
[3] =>
)
A little stuck here any help would be much appreciated.
Thanks
Let me say that I read through your code and have to make two assumptions: $numberOfQuesitons = 4 and $single = 2 in the case of Victoia.
Assumption is based on the fact that the name of a person is included in the result arrays and otherwise could not be derived.
So in your code at the iteration of Victoia we will have the following array to work with:
$row[$key] = [
0 => 'Victoia',
2 => 'Leeds',
];
Then at the inner for loop the following will happen (as noted in comments):
for ($i = $single; $i < $numberOfQuesitons; $i++) {
// 4 - 2 = 2, 2 > 0 = true <-- first iteration
// 4 - 3 = 1, 1 > 0 = true <-- second (and final) iteration
if ($numberOfQuesitons - $i > 0) {
// $currentKey doesn't change in this process
// and since the key is taken from the array
// $row[$key] points to, the key function will return 0 each iteration.
if ($currentKey > 0) {
// Also note that unshift will only add elements to the front of the array.
array_unshift($row[$key], null);
} else {
// Hence we drop down in this branch of the if statemtent
// as 0 > 0 evaluates to false each evaluation.
// So we start with [0] => Rozi || Victoia
// [2] => Leeds || Somewhere
// Push null thus: [3] => null
// Push null thus: [4] => null
// Hence our final result.
// Also note that push only 'pushes' elements at the end of the array.
array_push($row[$key], null);
}
}
}
To solve this we could change the logic a little bit, but personally I would modify the nested loop to the following (or something similar):
$answersArr = (array) $answers;
$row = array();
$numberOfQuesitons = count($headers);
foreach ($answersArr as $key => $result) {
$answer = json_decode(stripslashes($result->answers));
$row[$key] = (array) $answer;
// We simply create a range from 0 up to the last question number.
$all = range(0, $numberOfQuesitons - 1);
// Taking the difference between all questions and the answered
// ones will give us the missing ones.
$unAnsweredQs = array_diff($all, array_keys($row[$key]));
// Add those missing questions to the array.
foreach ($unAnsweredQs as $unAnswered) {
// Or maybe a more appropriate default.
$row[$key][$unAnswered] = null;
}
// Sort the keys, such that we respect the wanted order
// Name (key 0), Q1, Q2, ..., QN
ksort($row[$key]);
}
print_r($row);
$champions array =
Array (
[0] => Shen
[1] => Graves
[2] => Lux
[3] => Tristana
[4] => Janna
[5] => Lissandra
[6] => RekSai
[7] => Anivia
[8] => Lucian
[9] => Alistar )
This array has always 10 values.
$fbps array =
Array (
[0] => RekSai
[1] => Alistar
[2] => Lucian )
This array has always 1-5 values.
What i want to make
Array (
[0] => 0
[1] => 0
[2] => 0
[3] => 0
[4] => 0
[5] => 0
[6] => 1
[7] => 0
[8] => 1
[9] => 1 )
My english is bad to explain this, i hope arrays are enough to tell. Sorry for bad title and explanation.
Edit: Ill try to explain it more. For example Shen's key is 0 in first array. $fbps array doesnt have a value named "Shen" so in third array 0 => 0. Lucian's key is 8 in first array. fbps have a value named Lucian. So third arrays 8th key has value "1"
$cArr = array('Shen','Graves','Lux','Tristana','Janna','Lissandra','RekSai','Anivia','Lucian','Alistar');
$fbps = array('RekSai','Anivia','Lucian');
foreach ($cArr as $key=>$value) {
if(array_search($value, $fbps) !== false) {
$cArr[$key] = 1;
} else {
$cArr[$key] = 0;
}
}
var_dump($cArr);
Or a more compact version:
$cArr = array('Shen','Graves','Lux','Tristana','Janna','Lissandra','RekSai','Anivia','Lucian','Alistar');
$fbps = array('RekSai','Anivia','Lucian');
foreach ($cArr as $key=>$value) {
$cArr[$key] = (array_search($value, $fbps) !== false) ? 1 : 0;
}
var_dump($cArr);
EDIT:
added in the !== false conditional as matches found in position 0 of the $fbps array incorrectly evaluated to false because 0 also = false in PHP land...
EDIT 2:
This function has O(N) complexity, meaning it'll grow linearly and in direct proportion to the size of the input data set.
Does the resulting array just have a value of 1 for every element of $fbps that appears in $champions? If so, something like this should do it;
$champions = ['Shen', 'Graves', 'Alister', '...'];
$fbps = ['Shen', 'Alister', '...'];
$result = array_map(function($value) use ($fbps) {
return (int)in_array($value, $fbps);
}, $champions);
I know you've already accepted an answer but here is the most efficient solution:
<?php
// Your arrays
$champions = array('Shen','Graves','Lux','Tristana','Janna','Lissandra','RekSai','Anivia','Lucian','Alistar');
$fbps = array('RekSai','Alistar','Lucian');
// New array which will store the difference
$champ_compare = array();
// Flip the array so that it is associative and uses the names as keys
// http://php.net/manual/en/function.array-flip.php
$fbps = array_flip($fbps);
// Loop all champions and use $v as reference
foreach($champions as &$v)
{
// Check for the existent of $v in the associative $fbps array
// This is leaps and bounds faster than using in_array()
// Especially if you are running this many times with an unknown number of array elements
$champ_compare[] = (int)isset($fbps[$v]);
}
unset($v);
// Flip it back if you need to
$fbps = array_flip($fbps);
print_r($champ_compare);
If you just want the most compact code and do not care about performance then you can try this:
<?php
// Your arrays
$champions = array('Shen','Graves','Lux','Tristana','Janna','Lissandra','RekSai','Anivia','Lucian','Alistar');
$fbps = array('RekSai','Alistar','Lucian');
// New array which will store the difference
$champ_compare = array();
// Loop all champions and use $v as reference
foreach($champions as &$v)
{
// Check if the current champion exists in $fbps
$champ_compare[] = (int)in_array($v, $fbps);
}
unset($v);
print_r($champ_compare);
Not as detailed as Garry's answer, but is based on your existing arrays.
$res = array()
foreach($champions as $key => $val) {
$res[$key] = (in_array($val, $fbps)) ? 1 : 0;
}
var_dump($res)
Edit: I've switched the array_key_exists to in_array.
<?php
$champions = array('Shen', 'Graves', 'Lux', 'Tristana', 'Janna', 'Lissandra', 'RekSai', 'Anivia', 'Lucian', 'Alistar');
$fbps = array('RekSai', 'Alistar', 'Lucian');
$res = array();
foreach($champions as $key => $val) {
$res[$key] = (in_array($val, $fbps)) ? 1 : 0;
}
var_dump($res);
I have the following array imported from a CSV:
Array
(
[0] => Array
(
[0] => QUARTERLY STATS;Q1/2011;Q2/2011;Q3/2011;Q4/2011;Q1/2012;Q2/2012;Q3/2012;Q4/2012;Q1/2013;Q2/2013;Q3/2013;Q4/2013;Q1/2014
)
[1] => Array
(
[0] => January;7500;8800;9500;10000;10500;11000;11500;12000;12500;13000;13420;13820;14200
)
[2] => Array
(
[0] => ;;17
[1] => 30%;8%;5
[2] => 30%;5%;4
[3] => 80%;4
[4] => 50%;4
[5] => 30%;4
[6] => 20%;4%;3
[7] => 20%;3%;2
[8] => 70%
)
[3] => Array
(
[0] => TOTAL;7500;8500;9500;11000;12500;11400;11800;13000;12500;13000;13420;13820;14200
)
[4] => Array
(
[0] => ;;17
[1] => 30%;7
[2] => 95%;5
[3] => 26%;5%;4
[4] => 76%;4
[5] => 55%;4
[6] => 35%;4
[7] => 17%;4%;3
[8] => 23%;2
[9] => 98%;2
[10] => 75%
)
So,
I would like to get rid of all arrays containing "% and TOTAL".
I thought to loop through and unset the matching case:
$remove ="TOTAL";
foreach ($csv as $key => $value){
if (in_array($remove,$value[$key])){
unset($value[$key]);
}
}
This is the error I got:
Warning: in_array() expects parameter 2 to be array, null given
My PHP Version 5.3.10
Would you do it that way or would you use the array_filter?
I am browsing since 2 hours the forum but I could not find any hint helping me out.
Cheers.
You can try by preg_replace for removing TOTAL & %. If you want to remove the element from array then use unset & finally use array_filter for removing null elements.
$newArr = array();
foreach($arr as $key=>$value){
foreach($value as $k=>$v){
$newArr[$key][$k] = preg_replace('/(TOTAL)|(%)/', '', $v); //for removing TOTAL & %
unset($arr[$key][$k]); //for unset the array elements that contains TOTAL & %
}
}
//Output by replacement
print '<pre>';
print_r($newArr);
print '</pre>';
//output after using unset
print '<pre>';
print_r(array_filter($arr));
print '</pre>';
In your case:
foreach ($csv as $subArray)
{
for ($i = 0, $len = count($subArray); $i < $len; $i++)
{
if (strpos($subArray[$i], $remove) !== false)
unset($subArray[$i])
}
}
Comments:
strict comparasion for strpos, if we use !=, then 0 position would be equals to false.
inner loop is "for-loop" bevause it's better to avoid changing content of array inside foreach.
$arr[][] = ("QUARTERLY STATS;Q1/2011;Q2/2011;Q3/2011;Q4/2011;Q1/2012;Q2/2012;Q3/2012;Q4/2012;Q1/2013;Q2/2013;Q3/2013;Q4/2013;Q1/2014");
$arr[][] = ("January;7500;8800;9500;10000;10500;11000;11500;12000;12500;13000;13420;13820;14200");
$arr[] = array(";;17","30%;8%;5","30%;5%;4","80%;4","50%;4","30%;4","20%;4%;3","20%;3%;2","70%");
$arr[][] = ("TOTAL;7500;8500;9500;11000;12500;11400;11800;13000;12500;13000;13420;13820;14200");
$arr[] = array("30%;7","95%;5","26%;5%;4","76%;4","55%;4","35%;4","17%;4%;3","23%;2","98%;2","75%");
$newArr = array();
foreach($arr as $key=>$value) {
foreach($value as $k=>$v) {
$newArr[$key][$k] = preg_replace('/(TOTAL)|(%)/', '', $v); //for removing TOTAL & %
unset($arr[$key][$k]); //for unset the array elements that contains TOTAL & %
}
unset($arr[$key]); // IT does not unset ARR[2] ARR[3] and ARR[4] containing TOTAL & %
}
Output by replacement
print '<pre>';
print_r($newArr);
print '</pre>';
Output after using unset
print '<pre>';
print_r(array_filter($arr));
print '</pre>';
I did create exactly the same ARRAY as imported from CSV.
unset does not unset ARRAY2,3,4 which is containing TOTAL AND %.
unset does not unset ARRAY2,3,4 which is containing TOTAL AND %.
I am fetching some data from the db and then push them to an array. I need to find the count of some strings and print out the result (count) in an efficient way:
Array
(
[0] => q1-1,q2-2,q3-2,q4-1,q5-2,q6-3,q7-1,q8-4,
[1] => q1-1,q2-2,q3-1,q4-3,q5-3,q6-3,q7-2,q8-1,
[2] => q1-1,q2-1,q3-1,q4-1,q5-1,q6-2,q7-2,q8-2,
[3] => q1-3,q2-1,q3-1,q4-1,q5-2,q6-3,q7-1,q8-1,
[4] => q1-2,q2-2,q3-3,q4-1,q5-3,q6-3,q7-1,q8-1,
[5] => q1-1,q2-2,q3-3,q4-1,q5-2,q6-3,q7-1,q8-1,
[6] => q1-3,q2-1,q3-1,q4-3,q5-2,q6-3,q7-2,q8-4,
[7] => q1-2,q2-2,q3-3,q4-1,q5-2,q6-5,q7-1,q8-1,
[8] => q1-1,q2-1,q3-2,q4-3,q5-3,q6-5,q7-1,q8-1,
[9] => q1-2,q2-1,q3-1,q4-1,q5-3,q6-3,q7-1,q8-1,
[10] => q1-3,q2-2,q3-3,q4-3,q5-4,q6-3,q7-1,q8-1,
...
)
Sample data is above.
I need to know how many occurences of q1-1, q1-2 ... q8-4 is in the array and print out readable version. Ex. The are 23: q1-1, 412: q1-2 and so on.
I was going to create an array of each string that needs to be searched that iterate through the array. For every result increment the resultVariable for that string but I'm not sure if that's the best way.
Suggestions?
Pretty simple, loop on your array, create sub arrays, and create a counter array:
$counts = array () ;
foreach ( $your_array as $row ) {
$sub = explode(',', $row);
foreach ( $sub as $subval ) {
if ( array_key_exists ( $subval, $counts ) ) {
$counts[$subval] ++ ;
} else {
$counts[$subval] = 1 ;
}
}
}
Here is $counts:
Array (
'q1-1' => 23,
'q1-2' => 9,
// and so on....
);
Try:
$arr = array(...); //your array
$count = array();
foreach($arr as $v) {
$substr = explode(',', $v);
foreach($substr as $m) {
if(strstr($v, $m) !== FALSE)
$count[$m]++;
}
}
Printing the counts,
foreach($count as $k => $v)
echo "Count for '$k': ". $v;
Ok so i have a post that looks kind of this
[optional_premium_1] => Array
(
[0] => 61
)
[optional_premium_2] => Array
(
[0] => 55
)
[optional_premium_3] => Array
(
[0] => 55
)
[premium_1] => Array
(
[0] => 33
)
[premium_2] => Array
(
[0] => 36 )
[premium_3] => Array
(
[0] => 88 )
[premium_4] => Array
(
[0] => 51
)
how do i get the highest number out of the that. So for example, the optional "optional_premium_" highest is 3 and the "premium_" optional the highest is 4. How do i find the highest in this $_POST
You could use array_key_exists(), perhaps something like this:
function getHighest($variableNamePrefix, array $arrayToCheck) {
$continue = true;
$highest = 0;
while($continue) {
if (!array_key_exists($variableNamePrefix . "_" . ($highest + 1) , $arrayToCheck)) {
$continue = false;
} else {
highest++;
}
}
//If 0 is returned than nothing was set for $variableNamePrefix
return $highest;
}
$highestOptionalPremium = getHighest('optional_premium', $_POST);
$highestPremium = getHighest('premium', $_POST);
I have 1 question with 2 parts before I answer, and that is why are you using embedded arrays? Your post would be much simpler if you used a standard notation like:
$_POST['form_input_name'] = 'whatever';
unless you are specifically building this post with arrays for some reason. That way you could use the array key as the variable name and the array value normally.
So given:
$arr = array(
"optional_premium_1" => "61"
"optional_premium_2" => "55"
);
you could use
$key = array_keys($arr);
//gets the keys for that array
//then loop through get raw values
foreach($key as $val){
str_replace("optional_premium_", '', $val);
}
//then loop through again to compare each one
$highest = 0;
for each($key as $val){
if ((int)$val > $highest) $highest = (int)$val;
}
that should get you the highest one, but then you have to go back and compare them to do whatever your end plan for it was.
You could also break those into 2 separate arrays and assuming they are added in order just use end() http://php.net/manual/en/function.end.php
Loop through all POST array elements, pick out elements having key names matching "name_number" pattern and save the ones having the largest number portion of the key names. Here is a PHP script which does it:
<?php // test.php 20110428_0900
// Build temporary array to simulate $_POST
$TEMP_POST = array(
"optional_premium_1" => array(61),
"optional_premium_2" => array(55),
"optional_premium_3" => array(55),
"premium_1" => array(33),
"premium_2" => array(36),
"premium_3" => array(88),
"premium_4" => array(51),
);
$names = array(); // Array of POST variable names
// loop through all POST array elements
foreach ($TEMP_POST as $k => $v) {
// Process only elements with names matching "word_number" pattern.
if (preg_match('/^(\w+)_(\d+)$/', $k, $m)) {
$name = $m[1];
$number = (int)$m[2];
if (!isset($names[$name]))
{ // Add new POST var key name to names array
$names[$name] = array(
"name" => $name,
"max_num" => $number,
"key_name" => $k,
"value" => $v,
);
} elseif ($number > $names[$name]['max_num'])
{ // New largest number in key name.
$names[$name] = array(
"name" => $name,
"max_num" => $number,
"key_name" => $k,
"value" => $v,
);
}
}
}
print_r($names);
?>
Here is the output from the script:
Array
(
[optional_premium] => Array
(
[name] => optional_premium
[max_num] => 3
[key_name] => optional_premium_3
[value] => Array
(
[0] => 55
)
)
[premium] => Array
(
[name] => premium
[max_num] => 4
[key_name] => premium_4
[value] => Array
(
[0] => 51
)
)
)
Though ineffective, you could try something like
$largest = 0;
foreach($_POST as $key => $value)
{
$len = strlen("optional_premium_");
$num = substr($key, $len);
if($num > $largest)
$largest = $num;
}
print_r($largest);
The problem being that this will only work for one set of categories. It will most likely give errors throughout the script.
Ideally, you would want to reorganize your post, make each array be something like
[optional_premium_1] => Array
(
[0] => 61
["key"] => 1
)
[optional_premium_2] => Array
(
[0] => 61
["key"] => 2
)
Then just foreach and use $array["key"] to search.