Here is the code I have now.
$Top3Things = explode(';',$Top3Things);
foreach($Top3Things as $key => $Thing)
$Top3Things[$key] = explode('|',$Thing);
I know that explode return an indexed array. But I thought there is a function I can put explode into and pass the names that will return an associative array.
I know this is not the answer but here is an example of what I'm looking for.
$Top3Things[$key] = (list($type,$size,$weight) = explode('|',$Thing));
The function you're looking for is array_combine().
<?php
$keys = ['type', 'size', 'weight'];
$values = explode(';', $Top3Things);
$combinedArray = array_combine($keys, $values);
Related
I would like to delete all unique values from an array.
So lets say I have $array = (1,2,3,5,4,3,4,5,234)
the function should delete all unique values and output:
$newarray = (3,5,4,3,4,5)
I just thought of a solution with array_count_values but I do not know how I could iterate it. Furthermore I am sure there is a more elegant and efficient way to do this. Thank you for your help in advance.
One of solutions:
$array = [1,2,3,5,4,3,4,5,234];
$freq = array_count_values($array);
print_r(array_filter(
$array,
function ($v) use ($freq) { return 1 < $freq[$v]; }
));
$array = (1,2,3,5,4,3,4,5,234);
$freq = array_count_values($array);
$output = array();
foreach($array as $val){
if($freq[$val] >1){
$output[] = $val;
}
}
print_r($output);
May be not the most efficient way.
I have an array like this,
$array = array(
1,2,3,'4>12','13.1','13.2','14>30'
);
I want to find any value with an ">" and replace it with a range().
The result I want is,
array(
1,2,3,4,5,6,7,8,9,10,11,12, '13.1', '13.2', 14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30
);
My understanding:
if any element of $array has '>' in it,
$separate = explode(">", $that_element);
$range_array = range($separate[0], $separate[1]); //makes an array of 4 to 12.
Now somehow replace '4>12' of with $range_array and get a result like above example.
May be I can find which element has '>' in it using foreach() and rebuild $array again using array_push() and multi level foreach. Looking for a more elegant solution.
You can even do it in a one-liner like this:
$array = array(1,2,3,'4>12','13.1','13.2','14>30');
print_r(array_reduce(
$array,
function($a,$c){return array_merge($a,#range(...array_slice(explode(">","$c>$c"),0,2)));},
[]
));
I avoid any if clause by using range() on the array_slice() array I get from exploding "$c>$c" (this will always at least give me a two-element array).
You can find a little demo here: https://rextester.com/DXPTD44420
Edit:
OK, if the array can also contain non-numeric values the strategy needs to be modified: Now I will check for the existence of the separator sign > and will then either merge some cells created by a range() call or simply put the non-numeric element into an array and merge that with the original array:
$array = array(1,2,3,'4>12','13.1','64+2','14>30');
print_r(array_reduce(
$array,
function($a,$c){return array_merge($a,strpos($c,'>')>0?range(...explode(">",$c)):[$c]);},
[]
));
See the updated demo here: https://rextester.com/BWBYF59990
It's easy to create an empty array and fill it while loop a source
$array = array(
1,2,3,'4>12','13.1','13.2','14>30'
);
$res = [];
foreach($array as $x) {
$separate = explode(">", $x);
if(count($separate) !== 2) {
// No char '<' in the string or more than 1
$res[] = $x;
}
else {
$res = array_merge($res, range($separate[0], $separate[1]));
}
}
print_r($res);
range function will help you with this:
$array = array(
1,2,3,'4>12','13.1','13.2','14>30'
);
$newArray = [];
foreach ($array as $item) {
if (strpos($item, '>') !== false) {
$newArray = array_merge($newArray, range(...explode('>', $item)));
} else {
$newArray[] = $item;
}
}
print_r($newArray);
I am trying to get value from array and pass only comma separated key string and get same output without. Is it possible without using foreach statement. Please suggest me.
<?php
$str = "1,2,3";
$array = array("1"=>"apple", "2"=>"banana", "3"=>"orange");
$keyarray = explode(",",$str);
$valArr = array();
foreach($keyarray as $key){
$valArr[] = $array[$key];
}
echo $valStr = implode(",", $valArr);
?>
Output : apple,banana,orange
Use array_intersect_key
$str = "1,2,3";
$array = array("1"=>"apple", "2"=>"banana", "3"=>"orange");
$keyarray = explode(",",$str);
echo implode(",", array_intersect_key($array, array_flip($keyarray)));
https://3v4l.org/gmcON
One liner:
echo implode(",", array_intersect_key($array, array_flip(explode(",",$str))));
A mess to read but a comment above can explain what it does.
It means you don't need the $keyarray
Suggestion : Use separate row for each value, to better operation. Although you have created right code to get from Comma sparate key to Value from array, but If you need it without any loop, PHP has some inbuilt functions like array_insersect , array_flip to same output
$str = "1,2";
$arr1 = ["1"=>"test1","2"=>"test2","3"=>"test3"];
$arr2 = explode(",",$str);
echo implode(", ",array_flip(array_intersect(array_flip($arr1),$arr2)));
Live demo
you can try using array_filter:
$str = "1,2,3";
$array = array("1"=>"apple", "2"=>"banana", "3"=>"orange");
$keyarray = explode(",",$str);
$filtered = array_filter($array, function($v,$k) use($keyarray){
return in_array($k, $keyarray);
},ARRAY_FILTER_USE_BOTH);
print_r($filtered);
OUTPUT
Array
(
[1] => apple
[2] => banana
[3] => orange
)
Another way could be using array_map():
echo $valStr = implode(",", array_map(function ($i) use ($array) { return $array[$i]; }, explode(",", $str)));
Read it from bottom to top:
echo $valStr = implode( // 3. glue values
",",
array_map( // 2. replace integers by fruits
function ($i) use ($array) {
return $array[$i];
},
explode(",", $str) // 1. Split values
)
);
I've tried to make this:
phones:[{"numbers":12345},{"numbers":67890}]
How can I achieve that from an explode?
$phones = "123456;7890
$phones = explode(';', $phones);
I've tried using foreach like this:
foreach($phones as $phone){
$array["numbers"] = $phone;
}
But it keep replacing the first key. and yes i read that PHP array can't have the same key on an array.
The problem is that you're setting the 'numbers' key in the array on each iteration. Instead, you want the result to be an array where every element is an associative array where the key is 'numbers' and the value is a number:
$phones = "123456;7890";
$exploded = explode(';', $phones);
$result = array();
foreach ($exploded as $elem) {
$result[] = array('numbers' => $elem);
}
I have a query in codeigniter like this
$query_tutors = $this->db->get_where("tutor_info", array('tutor_id' => $tutor_id));
I have also other array elements that I want to pass in the query which depends on some conditions.
So how do I push other multidimensional array elements to the existing array so I can pass the variable as a whole in the query?
array_push is not working in this case.
$array = array();
$array = array("tutor_id" => $tutor_id);
$array = array("online" => $online); // want to merge this to the 1st array.
$query_tutors = $this->db->get_where("tutor_info", $array);
First you're doing it wrong.
$array = array();
$array = array("tutor_id" => $tutor_id);
You're recreating the array again, which will delete it from the memory. Either you have to use
$array['tutor_id'] = $tutor_id;
$array["online"] = $online;
or
$array = array('tutor_id' => $tutor_id, 'online' => $online);
or if you want to merge two arrays
$array = array_merge(array('tutor_id' => $tutor_id), array('tutor_id' => $tutor_id));
Your initial code
$array = [];
$array = ["tutor_id" => $tutor_id];
Now, if you want to add conditional merge, simply follow,
if($condition)
{
$array = array_merge($array, ["online" => $online]);
}
If $condition == true You final array will be,
$array = ['tutor_id' => $tutor_id, 'online' => $online];
You are almost there, just need to read a little bit more about associative arrays.
Solution:
$array = array();
$array["tutor_id"] = $tutor_id;
$array["online"] = $online;
$query_tutors = $this->db->get_where("tutor_info", $array);
This way your $array will have all indexes which you want.
You can do something like this:
$array = array();
if (!empty($tutor_id))
{
$array["tutor_id"] = $tutor_id;
}
if (!empty($online))
{
$array["online"] = $online;
}
$query_tutors = $this->db->get_where("tutor_info", $array);