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I have an array with comma separated numbers and I want to remove all duplicated numbers. Is the approach below the best choice or is there a smarter one?
$filter_tags_array[] = '4,6,2,5,8';
$filter_tags_array[] = '6,8,1,3,5,7,2,4';
$filter_tags_array[] = '2,4,1,3,5';
$filter_tags_array[] = '6,3,5,8,2,4';
$filter_tags_array[] = '2,8,11,4,9,12';
$filter_tags_array[] = '9,11,2,8,10,12,4';
$tags_id = '';
foreach($filter_tags_array as $filter_tags) {
$tags_id .= $filter_tags . ',';
}
$tags_id = implode(',', array_unique(explode(',', $tags_id)));
echo "<pre>";
print_r($tags_id);
print_r results: 4,6,2,5,8,1,3,7,11,9,12,10,
It would be better to implode the array rather than concatenate each string. This is because php has to create a new string every time.
https://3v4l.org/fUEtn
This should work for you, see here
$filter_tags_array[] = '4,6,2,5,8';
$filter_tags_array[] = '6,8,1,3,5,7,2,4';
$filter_tags_array[] = '2,4,1,3,5';
$filter_tags_array[] = '6,3,5,8,2,4';
$filter_tags_array[] = '2,8,11,4,9,12';
$filter_tags_array[] = '9,11,2,8,10,12,4';
$tags_id = implode(',',array_unique(explode(',', (implode(',', $filter_tags_array)))));
print($tags_id);
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I got this string
$string = '1:23:health,2:24:mana';
$v = explode(",", $string);
foreach($v as $data)
{
echo $data[0][1];
}
What im looking is to making a "multidimensional string" by exploding ','
Wanna do this:
data[0][0] = 1;
data[0][1] = 23;
data[0][2] = "health";
How can i do this in PHP?
$string = '1:23:health,2:24:mana';
$result = [];
foreach (explode(',', $string) as $step) {
$result[] = explode(':', $step);
}
print_r($result);
An alternative is:
$string = '1:23:health,2:24:mana';
$result = array_chunk(preg_split('/[:,]/', $string), 3);
print_r($result);
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I have probably information about whether it is available in PHP to detect a duplicate and a book about not removing it and adding it to -1, -2, -3
Example:
$string = 'H4,H4,H3,WY21W,W5W,W5W,WY21W,W21/5W,W21/5W,W21W,W16W,W5W';
Result:
$output = 'H4,H4-1,H3,WY21W,W5W,W5W-1,WY21W-1,W21/5W,W21/5W-1,W21W,W16W,W5W-2'
$string = 'H4,H4,H3,WY21W,W5W,W5W,WY21W,W21/5W,W21/5W,W21W,W16W,W5W';
$parts = explode(',', $string); // split by comma
$used = []; // array to count the number of occurrences
$result = []; // array to take the "new" elements
foreach($parts as $part) {
if(isset($used[$part])) { // if there is an entry in the counter array already,
// increment it by one,
$used[$part]++;
}
else { // else initialize with 0
$used[$part] = 0;
}
// put part into new array, append -(counter) if counter > 0
$result[] = $part . ($used[$part] ? '-'.$used[$part] : '');
}
echo implode(',', $result); // join together with comma
Pretty much the same as misorude's answer.
<?php
$string = 'H4,H4,H3,WY21W,W5W,W5W,WY21W,W21/5W,W21/5W,W21W,W16W,W5W';
$values = explode(',', $string);
foreach($values as $k => $value)
if($counts[$value] = !isset($counts[$value]) ? 0 : $counts[$value]-1)
$values[$k] = $value . $counts[$value];
print implode(',', $values);
Output:
H4,H4-1,H3,WY21W,W5W,W5W-1,WY21W-1,W21/5W,W21/5W-1,W21W,W16W,W5W-2
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i can separate join column with comma, but how to remove comma if on the second column is null?
in below, i have 2 column i want join otot2 and otot3
1. how to not shown comma after otot2 if otot3 null?
2. and how to not shown anything comma if otot2 and otot 3 null?
3. otot2 and otot3 flexible ( not always has data)
here my php code for output query:
if(mysqli_num_rows($hasil) > 0)
{
$response = array();
while($data = mysqli_fetch_array($hasil))
{
$h['main muscle'] = $data['otot1'];
$h['other muscle'] = $data['otot2'].', '.$data['otot3'];
array_push($response, $h);
}
$response["success"];
echo json_encode($response);
A simple solution would be -
$response = array();
while($data = mysqli_fetch_array($hasil))
{
// other code
$temp = array($data['otot2'], $data['otot3']); // Store them in array
$temp = array_filter($temp); // remove empty values
$h['other muscle'] = implode(',', $temp); // implode them with (,)
// Other codes
array_push($response, $h);
}
By using array_filter & implode you don't have to worry about the ,, as array_filter would remove the empty values and if there is 2 values in the array them the string would be , separated else not.
Or you can try this also
$h['other muscle'] = $data['otot2'];
if($data['otot3'] !== null)
$h['other muscle'] .= ', ' . $data['otot3']; // Concatenate
Demo
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I have two arrays.
$a = array("one","two","three");
$b = array ( 0,1,2,3,4,5,6,7,8,9);
Look at the user contributed example in http://www.php.net/manual/en/class.infiniteiterator.php
$obj = new stdClass();
$obj->Mon = "Monday";
$obj->Tue = "Tuesday";
$obj->Wed = "Wednesday";
$obj->Thu = "Thursday";
$obj->Fri = "Friday";
$obj->Sat = "Saturday";
$obj->Sun = "Sunday";
$infinate = new InfiniteIterator(new ArrayIterator($obj));
foreach (new LimitIterator($infinate, 0, 14) as $value ) {
print($value . PHP_EOL);
}
You could create a mapping function and use array_map as follows:
function numToName($num) {
return array("zero","one","two","three","four","five",
"six","seven","eight","nine")[$num];
}
$b = array (0,8,2,3,7,5,6,0,4,1);
$result = array_map("numToName", $b);
print_r($result);
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I found problem with this:
$explode = explode($start, $data);
$abc = explode($end, $explode[1]);
$found = $abc[0] . '<br/>';
$found .= $abc[1] . '<br/>';
$found .= $abc[2] . '<br/>';
return $found;
The abc[0], abc[1] and more is randomly based by exploded results. How to define if $found is array or something I can loop it in foreach?
That's. Thank You for answer.
explode($start, $data) will return an array unless $start is an empty string "" in which case it will return false. You can confirm whether $found is an array by using is_array($found) which will return true if $found is an array and false otherwise.