I have an array as follows
$fruit = array(' apple ','banana ', ' , ', ' cranberry ');
I want an array which contains the values without the white spaces on either sides but it can contain empty values how to do this in php.the output array should be like this
$fruit = array('apple','banana', ',', 'cranberry');
array_map and trim can do the job
$trimmed_array = array_map('trim', $fruit);
print_r($trimmed_array);
Multidimensional-proof solution:
array_walk_recursive($array, function(&$arrValue, $arrKey){ $arrValue = trim($arrValue);});
array_walk() can be used with trim() to trim array
<?php
function trim_value(&$value)
{
$value = trim($value);
}
$fruit = array('apple','banana ', ' cranberry ');
var_dump($fruit);
array_walk($fruit, 'trim_value');
var_dump($fruit);
?>
See 2nd example at http://www.php.net/manual/en/function.trim.php
I had trouble with the existing answers when using multidimensional arrays. This solution works for me.
if (is_array($array)) {
foreach ($array as $key => $val) {
$array[$key] = trim($val);
}
}
If the array is multidimensional, this will work great:
//trims empty spaces in array elements (recursively trim multidimesional arrays)
function trimData($data){
if($data == null)
return null;
if(is_array($data)){
return array_map('trimData', $data);
}else return trim($data);
}
one sample test is like this:
$arr=[" aaa ", " b ", "m ", [" .e ", " 12 3", "9 0 0 0 "]];
print_r(trimData($arr));
//RESULT
//Array ( [0] => aaa [1] => b [2] => m [3] => Array ( [0] => .e [1] => 12 3 [2] => 9 0 0 0 ) )
$fruit= array_map('trim', $fruit);
array_map('trim', $data) would convert all subarrays into null. If it is needed to trim spaces only for strings and leave other types as it is, you can use:
$data = array_map(
function ($item) {
return is_string($item) ? trim($item) : $item;
},
$data
);
If you want to trim and print one dimensional Array or the deepest dimension of multi-dimensional Array you should use:
foreach($array as $key => $value)
{
$array[$key] = trim($value);
print("-");
print($array[$key]);
print("-");
print("<br>");
}
If you want to trim but do not want to print one dimensional Array or the deepest dimension of multi-dimensional Array you should use:
$array = array_map('trim', $array);
If you don't want to lose elements of an associative array, DONT use array_walk or array_map!
A slightly shorter version of the foreach solution:
foreach($array as &$val)
$val = trim($val);
This works for associative arrays.
function generateRandomString($length = 10) {
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
return $randomString;
}
function generateRandomSpaces() {
$output = '';
$i = rand(1, 10);
for ($j = 0; $j <= $i; $j++) {
$output .= " ";
}
return $output;
}
// Generating an array to test
$array = [];
for ($i = 0; $i <= 1000; $i++) {
$array[] = generateRandomSpaces() . generateRandomString(10) . generateRandomSpaces();
}
// ARRAY MAP
$start = microtime(true);
for ($i = 0; $i < 100000; $i++) {
$trimmed_array=array_map('trim',$array);
}
$time = (microtime(true) - $start);
echo "Array map: " . $time . " seconds\n";
// ARRAY WALK
$start = microtime(true);
for ($i = 0; $i < 100000; $i++) {
array_walk($array, 'trim');
}
$time = (microtime(true) - $start);
echo "Array walk : " . $time . " seconds\n";
// FOREACH
$start = microtime(true);
for ($i = 0; $i < 100000; $i++) {
foreach ($array as $index => $elem) {
$array[$index] = trim($elem);
}
}
$time = (microtime(true) - $start);
echo "Foreach: " . $time . " seconds\n";
// FOR
$start = microtime(true);
for ($i = 0; $i < 100000; $i++) {
for ($j = 0; $j < count($array) - 1; $j++) {
$array[$j] = trim($array[$j]);
}
}
$time = (microtime(true) - $start);
echo "For: " . $time . " seconds\n";
The output of the code above is:
Array map: 8.6775720119476 seconds
Array walk: 10.423238992691 seconds
Foreach: 7.3502039909363 seconds
For: 9.8266389369965 seconds
This values of course may change but I would say foreach is the best option.
Trim in array_map change type if you have NULL in value.
Better way to do it:
$result = array_map(function($v){
return is_string($v)?trim($v):$v;
}, $array);
simply you can use regex to trim all spaces or minify your array items
$array = array_map(function ($item) {
return preg_replace('/\s+/', '', $item);
}, $array);
function trim_value(&$value)
{
$value = trim($value);
}
// ut_sreco_dis Module
public function disExcelUpload($file=""){
ini_set('MAX_EXECUTION_TIME', -1);
ini_set('memory_limit', '-1');
$file_upload = $file;
if (isset($file_upload) && !empty($file_upload)){
//You can add directly the Composer Autoloder in your controller:
require FCPATH . 'vendor/autoload.php';
try{
$objPHPExcel = PHPExcel_IOFactory::load($file_upload);
}
catch (Exception $e){
die('Error loading file "' . pathinfo($file_upload, PATHINFO_BASENAME) . '": '.#$e->getMessage());
}
$allDataInSheet = $objPHPExcel->getActiveSheet()->toArray(null, true, true, true);
$sheet = $objPHPExcel->getSheet(0);
$highestRow = $sheet->getHighestRow();
$highestCol = $sheet->getHighestColumn();
$highestco = $sheet->getHighestDataColumn();
$arrayCount = count($allDataInSheet);
$now = date("Y-m-d H:i:s");
$flag = 0;
$check_template = array(
'A' => 'FIN_ID',
'B' => 'SECCODE',
'C' => 'SCHEME_NO',
'D' => 'SEC_SCH',
'E' => 'DISNO',
'F' => 'DISQTY',
'G' => 'BILLQTY',
'H' => 'BILLREF',
'I' => 'BILLDT',
);
$input_template = $allDataInSheet[1];
array_walk($input_template, $this->trim_value);
$result = array_diff($check_template, $input_template);
if(empty($result))
{
$this->srObject->truncTableDis();
# loop for inserting data
for ($i = 2,$j=0; $i <= $highestRow; $i++){
$db_ch_ot = 64;
$fin_id = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$sec_code = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$sch_no = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$sec_sch = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$dis_no = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$dis_qty = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$bill_qty = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$bill_ref = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$bill_dt = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
if(empty($bill_dt)){
$bill_dt = null;
}else{
$dip_dt = date("Y-m-d",strtotime($bill_dt));
}
$dt = date('Y-m-d H:i:s');
$insert_data = array(
"fin_id_data" => $fin_id,
"sec_code_data" => $sec_code,
"sch_no_data" => $sch_no,
"sec_sch_data" => $sec_sch,
"dis_no_data" => $dis_no,
"dis_qty_data" => $dis_qty,
"bill_qty_data" => $bill_qty,
"bill_ref_data" => $bill_ref,
"bill_dt_data" => $bill_dt,
"created_at_data" => $dt,
"updated_at_data" => $dt,
);
if($this->srObject->insertSdisData($insert_data))
{
++$flag;
}
} //loop close
} else {
$this->session->set_flashdata('error', 'Error. Invalid Excel Template');
redirect(site_url('schill-bill-checking-suuti/sreco'));
}
$this->session->set_flashdata('success', 'File Uploaded Successfully ..'.' New Record Inserted : '.$flag);
redirect(site_url('schill-bill-checking-suuti/sreco'));
}
}
function trim_value(&$value)
{
$value = trim($value);
}
// ut_sreco_dis Module
public function disExcelUpload($file=""){
ini_set('MAX_EXECUTION_TIME', -1);
ini_set('memory_limit', '-1');
$file_upload = $file;
if (isset($file_upload) && !empty($file_upload)){
//You can add directly the Composer Autoloder in your controller:
require FCPATH . 'vendor/autoload.php';
try{
$objPHPExcel = PHPExcel_IOFactory::load($file_upload);
}
catch (Exception $e){
die('Error loading file "' . pathinfo($file_upload, PATHINFO_BASENAME) . '": '.#$e->getMessage());
}
$allDataInSheet = $objPHPExcel->getActiveSheet()->toArray(null, true, true, true);
$sheet = $objPHPExcel->getSheet(0);
$highestRow = $sheet->getHighestRow();
$highestCol = $sheet->getHighestColumn();
$highestco = $sheet->getHighestDataColumn();
$arrayCount = count($allDataInSheet);
$now = date("Y-m-d H:i:s");
$flag = 0;
$check_template = array(
'A' => 'FIN_ID',
'B' => 'SECCODE',
'C' => 'SCHEME_NO',
'D' => 'SEC_SCH',
'E' => 'DISNO',
'F' => 'DISQTY',
'G' => 'BILLQTY',
'H' => 'BILLREF',
'I' => 'BILLDT',
);
$input_template = $allDataInSheet[1];
array_walk($input_template, $this->trim_value);
$result = array_diff($check_template, $input_template);
if(empty($result))
{
$this->srObject->truncTableDis();
# loop for inserting data
for ($i = 2,$j=0; $i <= $highestRow; $i++){
$db_ch_ot = 64;
$fin_id = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$sec_code = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$sch_no = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$sec_sch = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$dis_no = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$dis_qty = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$bill_qty = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$bill_ref = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
$bill_dt = trim($allDataInSheet[$i][chr(++$db_ch_ot)]);
if(empty($bill_dt)){
$bill_dt = null;
}else{
$dip_dt = date("Y-m-d",strtotime($bill_dt));
}
$dt = date('Y-m-d H:i:s');
$insert_data = array(
"fin_id_data" => $fin_id,
"sec_code_data" => $sec_code,
"sch_no_data" => $sch_no,
"sec_sch_data" => $sec_sch,
"dis_no_data" => $dis_no,
"dis_qty_data" => $dis_qty,
"bill_qty_data" => $bill_qty,
"bill_ref_data" => $bill_ref,
"bill_dt_data" => $bill_dt,
"created_at_data" => $dt,
"updated_at_data" => $dt,
);
if($this->srObject->insertSdisData($insert_data))
{
++$flag;
}
} //loop close
} else {
$this->session->set_flashdata('error', 'Error. Invalid Excel Template');
redirect(site_url('schill-bill-checking-suuti/sreco'));
}
$this->session->set_flashdata('success', 'File Uploaded Successfully ..'.' New Record Inserted : '.$flag);
redirect(site_url('schill-bill-checking-suuti/sreco'));
}
}
function trimArray(&$value)
{
$value = trim($value);
}
$pmcArray = array('php ','mysql ', ' code ');
array_walk($pmcArray, 'trimArray');
by using array_walk function, we can remove space from array elements and elements return the result in same array.
Related
I have a comma separated string like
$str = "word1,word2,word3";
And i want to make a parent child relationship array from it.
Here is an example:
Try this simply making own function as
$str = "word1,word2,word3";
$res = [];
function makeNested($arr) {
if(count($arr)<2)
return $arr;
$key = array_shift($arr);
return array($key => makeNested($arr));
}
print_r(makeNested(explode(',', $str)));
Demo
function tooLazyToCode($string)
{
$structure = null;
foreach (array_reverse(explode(',', $string)) as $part) {
$structure = ($structure == null) ? $part : array($part => $structure);
}
return $structure;
}
Please check below code it will take half of the time of the above answers:
<?php
$str = "sports,cricket,football,hockey,tennis";
$arr = explode(',', $str);
$result = array();
$arr_len = count($arr) - 1;
$prev = $arr_len;
for($i = $arr_len; $i>=0;$i--){
if($prev != $i){
$result = array($arr[$i] => $result);
} else {
$result = array ($arr[$i]);
}
$prev = $i;
}
echo '<pre>',print_r($result),'</pre>';
Here is another code for you, it will give you result as you have asked :
<?php
$str = "sports,cricket,football,hockey,tennis";
$arr = explode(',', $str);
$result = array();
$arr_len = count($arr) - 1;
$prev = $arr_len;
for($i = $arr_len; $i>=0;$i--){
if($prev != $i){
if($i == 0){
$result = array($arr[$i] => $result);
}else{
$result = array(array($arr[$i] => $result));
}
} else {
$result = array ($arr[$i]);
}
$prev = $i;
}
echo '<pre>',print_r($result),'</pre>';
I have a loop which increments the limit of the content which is showing on a website (json content).
The problem is that the loop stops at 50. The links that are generated with the incrementation are working fine when I'm calling them in the browser. The content is shown.
But I store only the content of the first 50 and then it stops.
public static function getAllCustomers() {
$rest = Rest::getInstance();
$spaces = self::getSpaces();
$customers = array();
$path = SpacePath::buildPath();
for ($i = 0;
; $i += Paths::$MAX_CONTENT_LENGTH) {
$temp = $path . '?start=' . $i . '&limit=50';
$content = Helper::toArray($temp);
print_r($temp);
// print_r(empty($content['results']));
if (!empty($content['results'])) {
foreach ($content ['results'] as $space) {
if (!preg_match('|^(.*?)-([0-9]+)|i', $space ['name'], $matches)) {
continue;
}
$customer = (object) array(
'name' => $matches [0],
'ident' => $matches [1],
'id' => $matches [2],
'space_key' => $space ['key'],
'options' => array()
);
$customers [] = $customer;
}
break;
}
}
print_r($customers);
return $customers;
}
Here, let me reformat your code so you can see what relates to what...
public static function getAllCustomers()
{
$rest = Rest::getInstance();
$spaces = self::getSpaces();
$customers = array();
$path = SpacePath::buildPath();
for ($i = 0; ; $i += Paths::$MAX_CONTENT_LENGTH)
{
$temp = $path . '?start=' . $i . '&limit=50';
$content = Helper::toArray($temp);
print_r($temp);
//print_r(empty($content['results']));
if (!empty($content['results']))
{
foreach ($content ['results'] as $space)
{
if (!preg_match('|^(.*?)-([0-9]+)|i', $space ['name'], $matches))
{
continue;
}
$customer = (object) array('name' => $matches [0]
,'ident' => $matches [1]
,'id' => $matches [2]
,'space_key' => $space ['key']
,'options' => array()
);
$customers [] = $customer;
}
break; // oops
}
}
print_r($customers);
return $customers;
}
You'll notice I added a comment to your break statement. ;)
I want to append a txt file with for loop data using php. Here is my code
$post_array = array('hdnItemTypeID', 'hdnItemType', 'hdnItemCode', 'hdnCost', 'txtDescription');
foreach ($post_array as $pos) {
foreach ($_POST[$pos] as $id => $row) {
$_POST[$pos][$id] = $row;
}
}
$ids = $_POST['hdnItemTypeID'];
$ItemTypeID = $_POST['hdnItemTypeID'];
$ItemType = $_POST['hdnItemType'];
$ItemCode = $_POST['hdnItemCode'];
//$Discount = $_POST['txtDiscount'];
$Discount = '0';
$UnitCost = $_POST['hdnCost'];
//$Amount = $UnitPrice + $Discount;
$Description = $_POST['txtDescription'];
$size = count($ids);
for ($i = 0; $i < $size; $i++) {
// Check for part id
if (empty($ids[$i])) {
continue;
}
$items = array(
':ItemTypeID' => $ItemTypeID[$i],
':ItemType' => $ItemType[$i],
':ItemCode' => $ItemCode[$i],
':Description' => $Description[$i],
':UnitCost' => $UnitCost[$i],
':Amount' => $UnitCost[$i] +$Discount,
':Discount' => $Discount
);
file_put_contents('Check.txt', print_r($items,true));
}
But only single array is getting is getting in the file. How to get althe array values in it?
file_put_contents by default overwrites everything. Use:
file_put_contents('Check.txt', $items, FILE_APPEND);
REFERENCE
I think you cant use
file_put_contents('Check.txt', print_r($items,true), FILE_APPEND);
See http://php.net/manual/fr/function.file-put-contents.php
issue: I have an associative array, where all the keys represent the csv headers and the values in each $key => array.. represent the items in that column.
Research: To my knowledge, fputcsv likes to go in row by row, but this column-based array is making that complicated. I have not found any function out there that accomplishes this.
Example:
Array(
['fruits'] => Array(
[0] => 'apples',
[1] => 'oranges',
[2] => 'bananas'
),
['meats'] => Array(
[0] => 'porkchop',
[1] => 'chicken',
[2] => 'salami',
[3] => 'rabbit'
),
)
Needs to become:
fruits,meats
apples,porkchop
oranges,chicken
bananas,salami
,rabbit
Why it's hard:
You need to know the max number of rows to make blank spots.
I had to write my own function. Thought maybe it might help someone else!
/*
* The array is associative, where the keys are headers
* and the values are the items in that column.
*
* Because the array is by column, this function is probably costly.
* Consider a different layout for your array and use a better function.
*
* #param $array array The array to convert to csv.
* #param $file string of the path to write the file.
* #param $delimeter string a character to act as glue.
* #param $enclosure string a character to wrap around text that contains the delimeter
* #param $escape string a character to escape the enclosure character.
* #return mixed int|boolean result of file_put_contents.
*/
function array_to_csv($array, $file, $delimeter = ',', $enclosure = '"', $escape = '\\'){
$max_rows = get_max_array_values($array);
$row_array = array();
$content = '';
foreach ($array as $header => $values) {
$row_array[0][] = $header;
$count = count($values);
for ($c = 1; $c <= $count; $c++){
$value = $values[$c - 1];
$value = preg_replace('#"#', $escape.'"', $value);
$put_value = (preg_match("#$delimeter#", $value)) ? $enclosure.$value.$enclosure : $value;
$row_array[$c][] = $put_value;
}
// catch extra rows that need to be blank
for (; $c <= $max_rows; $c++) {
$row_array[$c][] = '';
}
}
foreach ($row_array as $cur_row) {
$content .= implode($delimeter,$cur_row)."\n";
}
return file_put_contents($file, $content);
}
And this:
/*
* Get maximum number of values in the entire array.
*/
function get_max_array_values($array){
$max_rows = 0;
foreach ($array as $cur_array) {
$cur_count = count($cur_array);
$max_rows = ($max_rows < $cur_count) ? $cur_count : $max_rows;
}
return $max_rows;
}
New Way (using a class)
I wrote a class for this a while later, which I'll provide for anyone looking for one now:
class CSVService {
protected $csvSyntax;
public function __construct()
{
return $this;
}
public function renderCSV($contents, $filename = 'data.csv')
{
header('Content-type: text/csv');
header('Content-Disposition: attachment; filename="' . $filename . '"');
echo $contents;
}
public function CSVtoArray($filename = '', $delimiter = ',') {
if (!file_exists($filename) || !is_readable($filename)) {
return false;
}
$headers = null;
$data = array();
if (($handle = fopen($filename, 'r')) !== false) {
while (($row = fgetcsv($handle, 0, $delimiter, '"')) !== false) {
if (!$headers) {
$headers = $row;
array_walk($headers, 'trim');
$headers = array_unique($headers);
} else {
for ($i = 0, $j = count($headers); $i < $j; ++$i) {
$row[$i] = trim($row[$i]);
if (empty($row[$i]) && !isset($data[trim($headers[$i])])) {
$data[trim($headers[$i])] = array();
} else if (empty($row[$i])) {
continue;
} else {
$data[trim($headers[$i])][] = stripcslashes($row[$i]);
}
}
}
}
fclose($handle);
}
return $data;
}
protected function getMaxArrayValues($array)
{
return array_reduce($array, function($carry, $item){
return ($carry > $c = count($item)) ? $carry : $c;
}, 0);
}
private function getCSVHeaders($array)
{
return array_reduce(
array_keys($array),
function($carry, $item) {
return $carry . $this->prepareCSVValue($item) . $this->csvSyntax->delimiter;
}, '') . "\n";
}
private function prepareCSVValue($value, $delimiter = ',', $enclosure = '"', $escape = '\\')
{
$valueEscaped = preg_replace('#"#', $escape . '"', $value);
return (preg_match("#$delimiter#", $valueEscaped)) ?
$enclosure . $valueEscaped . $enclosure : $valueEscaped;
}
private function setUpCSVSyntax($delimiter, $enclosure, $escape)
{
$this->csvSyntax = (object) [
'delimiter' => $delimiter,
'enclosure' => $enclosure,
'escape' => $escape,
];
}
private function getCSVRows($array)
{
$n = $this->getMaxArrayValues($array);
$even = array_values(
array_map(function($columnArray) use ($n) {
for ($i = count($columnArray); $i <= $n; $i++) {
$columnArray[] = '';
}
return $columnArray;
}, $array)
);
$rowString = '';
for ($row = 0; $row < $n; $row++) {
for ($col = 0; $col < count($even); $col++) {
$value = $even[$col][$row];
$rowString .=
$this->prepareCSVValue($value) .
$this->csvSyntax->delimiter;
}
$rowString .= "\n";
}
return $rowString;
}
public function arrayToCSV($array, $delimiter = ',', $enclosure = '"', $escape = '\\', $headers = true) {
$this->setUpCSVSyntax($delimiter, $enclosure, $escape);
$headersString = ($headers) ? $this->getCSVHeaders($array) : '';
$rowsString = $this->getCSVRows($array);
return $headersString . $rowsString;
}
}
$data = array(
'fruits' => array(
'apples',
'oranges',
'bananas'
),
'meats' => array(
'porkchop',
'chicken',
'salami',
'rabbit'
),
);
$combined = array(array('fruits', 'meats'));
for($i = 0; $i < max(count($data['fruits']), count($data['meats'])); $i++)
{
$row = array();
$row[] = isset($data['fruits'][$i]) ? $data['fruits'][$i] : '';
$row[] = isset($data['meats'][$i]) ? $data['meats'][$i] : '';
$combined[] = $row;
}
ob_start();
$fp = fopen('php://output', 'w');
foreach($combined as $row)
fputcsv($fp, $row);
fclose($fp);
$data = ob_get_clean();
var_dump($data);
Conversion to csv and parsing of the array can be done in the same loop. Or did you mean that there might be more columns? This code can be easily modified for the general type of the array. Like this, for any number of the columns
$data = array(
'fruits' => array(
'apples',
'oranges',
'bananas'
),
'meats' => array(
'porkchop',
'chicken',
'salami',
'rabbit'
),
);
$heads = array_keys($data);
$maxs = array();
foreach($heads as $head)
$maxs[] = count($data[$head]);
ob_start();
$fp = fopen('php://output', 'w');
fputcsv($fp, $heads);
for($i = 0; $i < max($maxs); $i++)
{
$row = array();
foreach($heads as $head)
$row[] = isset($data[$head][$i]) ? $data[$head][$i] : '';
fputcsv($fp, $row);
}
fclose($fp);
$data = ob_get_clean();
var_dump($data);
I have some data in this format:
even--heaped<br />
even--trees<br />
hardrocks-cocked<br />
pebble-temple<br />
heaped-feast<br />
trees-feast<br />
and I want to end up with an output so that all lines with the same words get added to each other with no repeats.
even--heaped--trees--feast<br />
hardrocks--cocked<br />
pebbles-temple<br />
i tried a loop going through both arrays but its not the exact result I want. for an array $thing:
Array ( [0] => even--heaped [1] => even--trees [2] => hardrocks--cocked [3] => pebbles--temple [4] => heaped--feast [5] => trees--feast )
for ($i=0;$i<count($thing);$i++){
for ($j=$i+1;$j<count($thing);$j++){
$first = explode("--",$thing[$i]);
$second = explode("--",$thing[$j]);
$merge = array_merge($first,$second);
$unique = array_unique($merge);
if (count($unique)==3){
$fix = implode("--",$unique);
$out[$i] = $thing[$i]."--".$thing[$j];
}
}
}
print_r($out);
but the result is:
Array ( [0] => even--heaped--heaped--feast [1] => even--trees--trees--feast [4] => heaped--feast--trees--feast )
which is not what i want. Any suggestions (sorry about the terrible variable names).
This might help you:
$in = array(
"even--heaped",
"even--trees",
"hardrocks--cocked",
"pebbles--temple",
"heaped--feast",
"trees--feast"
);
$clusters = array();
foreach( $in as $item ) {
$words = explode("--", $item);
// check if there exists a word in an existing cluster...
$check = false;
foreach($clusters as $k => $cluster) {
foreach($words as $word) {
if( in_array($word, $cluster) ) {
// add the words to this cluster
$clusters[$k] = array_unique( array_merge($cluster, $words) );
$check = true;
break;
}
}
}
if( !$check ) {
// create a new cluster
$clusters[] = $words;
}
}
// merge back
$out = array();
foreach( $clusters as $cluster ) {
$out[] = implode("--", $cluster);
}
pr($out);
Try this code:
<?php
$data = array ("1--2", "3--1", "4--5", "2--6");
$n = count($data);
$elements = array();
for ($i = 0; $i < $n; ++$i)
{
$split = explode("--", $data[$i]);
$word_num = NULL;
foreach($split as $word_key => $word)
{
foreach($elements as $key => $element)
{
if(isset($element[$word]))
{
$word_num = $key;
unset($split[$word_key]);
}
}
}
if(is_null($word_num))
{
$elements[] = array();
$word_num = count($elements) - 1;
}
foreach($split as $word_key => $word)
{
$elements[$word_num][$word] = 1;
}
}
//combine $elements into words
foreach($elements as $key => $value)
{
$words = array_keys($value);
$elements[$key] = implode("--", $words);
}
var_dump($elements);
It uses $elements as an array of hashes to store the individual unique words as keys. Then combines the keys to create appropriate words.
Prints this:
array(2) {
[0]=>
string(10) "1--2--3--6"
[1]=>
string(4) "4--5"
}
Here is a solution with a simple control flow.
<?php
$things = array('even--heaped', 'even--trees', 'hardrocks--cocked',
'pebble--temple', 'heaped--feast' ,'trees--feast');
foreach($things as $thing) {
$str = explode('--', $thing);
$first = $str[0];
$second = $str[1];
$i = '0';
while(true) {
if(!isset($a[$i])) {
$a[$i] = array();
array_push($a[$i], $first);
array_push($a[$i], $second);
break;
} else if(in_array($first, $a[$i]) && !in_array($second, $a[$i])) {
array_push($a[$i], $second);
break;
} else if(!in_array($first, $a[$i]) && in_array($second, $a[$i])) {
array_push($a[$i], $first);
break;
} else if(in_array($first, $a[$i]) && in_array($second, $a[$i])) {
break;
}
$i++;
}
}
print_r($a);
?>
It seems you have already selected user4035's answer as best.
But i feel this one is optimized(Please correct me if i am wrong): eval.in
Code:
$array = Array ( 'even--heaped' , 'even--trees' ,'hardrocks--cocked' , 'pebbles--temple' , 'heaped--feast' , 'trees--feast' );
print "Input: ";
print_r($array);
for($j=0;$j < count($array);$j++){
$len = count($array);
for($i=$j+1;$i < $len;$i++){
$tmp_array = explode("--", $array[$i]);
$pos1 = strpos($array[$j], $tmp_array[0]);
$pos2 = strpos($array[$j], $tmp_array[1]);
if (!($pos1 === false) && $pos2 === false){
$array[$j] = $array[$j] . '--'.$tmp_array[1];unset($array[$i]);
}elseif(!($pos2 === false) && $pos1 === false){
$array[$j] = $array[$j] . '--'.$tmp_array[0];unset($array[$i]);
}elseif(!($pos2 === false) && !($pos1 === false)){
unset($array[$i]);
}
}
$array = array_values($array);
}
print "\nOutput: ";
print_r($array);