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This is my array
$array = array(
"13111" => "2014-06-21 19:51:00.0000000",
"23111" => "2014-06-20 19:51:00.0000000",
"12111" => "2014-06-21 19:51:00.0000000",
"23311" => "2014-06-22 19:51:00.0000000",
"13114" => "2014-06-21 19:51:00.0000000",
"23711" => "2014-06-20 19:51:00.0000000",
);
How can i get first 3 elements of my array and how can i sort by datetime? thanks
What you want is:
sort($array);
$array = array_slice($array, 0, 3);
first, the sort function will sort them lexicographically (which in this case coincides with the date) and then you slice it to get the elements you want.
EDIT
If you want to preserve the keys just use
asort($array); // "asort" instead of simple "sort"
$array = array_slice($array, 0, 3, true); // note the final "true" parameter!
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I have two arrays:
$array1 = array('104', '104', '104', '51', '228', '228');
$array2 = array('12121', '12120', '12119', '11821', '11788', '11787');
I need to create an array with two dimensions consisting of the elements of these two arrays in a specific way:
$array3 = array('104'=>array('12121', '12120', '12119'),'51'=>array('11821'),'228'=>array('11788', '11787'));
Array1 and Array2 always have the same number of elements.
How can I do this?
You can do it this way:
<?php
$array1 = ['104', '104', '104', '51', '228', '228'];
$array2 = ['12121', '12120', '12119', '11821', '11788', '11787'];
$result = [];
$index = 0;
foreach( $array1 as $key => $value ){
$result[$value][] = $array2[$index];
$index++;
}
Result:
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I have this array:
$top = array( 'John' => '23.4', 'Andrew' => '12.3' , 'Eric' => '15', 'Will' => '10');
How I can get position by numeric value?
Ex: John will get position 4 because have high value
Eric get position 3.....
I want to find position of key by value!
Another way to do it like below,
<?php
function find_rank($name){
$top = array( 'John' => '23.4', 'Andrew' => '12.3' , 'Eric' => '15', 'Will' => '10');
asort($top);
return array_search($name,array_keys($top))+1; # array index starts from zero that's why added extra 1
}
echo find_rank('John');
WORKING DEMO: https://3v4l.org/8rp95
This is not correct way to handle this but if you really have to deal with it here is a dirty painful to read code
asort($top);
$top = array_flip(array_values(array_flip($top)));
echo $top['Eric']; // will result 2 (list starts from 0 maybe you would like to +1 to result)
Another option:
asort($top);
$top = array_combine(range(1, count(array_keys($top))), array_keys($top));
echo $eric= array_search('Eric', $top); // return 3
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I have an array that looks like this:
And I need to translate it into this:
Some things to know about the $startArray is that it is dynamic based on the amount of people submitted on a form. Each person always has just those three fields though (custom_12, custom_13, custom_14 aka fName, lName, email). So if there were 5 members, the 5th members fName would be the key custom_12-5 in the start array.
I've been looking around on stackoverflow for a question just like this and I was not able to find one. What would be the steps taken and possible array functions or anything else for creating the $endArray ?
There's actually a builtin function for this: https://www.php.net/manual/en/function.array-chunk.php
For example, array_chunk($startArray, 3) will give you the base for your new array, you'll just need to then iterate through it and rename the keys.
Alternatively, just iterate through the array yourself and add the values to a new array depending on the index of the current iteration.
Thanks to Charlie's advice, I came up with this.
$startArray = array(
'custom_12' => 'john',
'custom_13' => 'johny',
'custom_14' => 'john#johny.com',
'custom_12-2' => 'bob',
'custom_13-2' => 'bobby',
'custom_14-2' => 'bob#bobby.com',
'custom_12-3' => 'don',
'custom_13-3' => 'donny',
'custom_14-3' => 'don#donny.com'
);
$middleArray = array_chunk($startArray, 3);
$endArray = array_map(function($val) {
return array(
'fName' => $val[0],
'lName' => $val[1],
'email' => $val[2]
);
}, $middleArray);
echo "<pre>";
print_r($endArray);
echo "</pre>";
And the output is exactly what I wanted:
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I have an array with following elements:
$arr = array(
'nick' => "blabla",
'pass => "blabla2"'
);
I would like to convert it somehow to strings, the first string would be the value of nick - "blabla", the second string would be the value of pass - "blabla2"
Thank you.
If you want to convert elements of the array to separate string variables you can use extract function to import elements from an array to variables. For example:
$arr = array(
'nick' => "blabla",
'pass' => "blabla2"
);
extract($arr);
echo $nick, ' ', $pass;
$arr = [
'nick' => "blabla",
'pass' => "blabla2"
];
$string_one=$arr['nick'];
$string_two=$arr['pass'];
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Does anybody know of an array diff implementation in PHP? I need to use this to develop a feature similar to the way stackexchange diffs tags.
Like the documentation says:
Compares array1 against one or more other arrays and returns the values in array1 that are not present in any of the other arrays.
For example:
$array1 = array("a" => "green", "red", "blue", "red");
$array2 = array("b" => "green", "yellow", "red");
$result = array_diff($array1, $array2);
Would end up with $result containing only the value blue, because it is only in one of the arrays.
Complete documentation here: http://php.net/manual/en/function.array-diff.php
There is array_diff which will compare the values of 2 arrays and return an array with values of the differences.
$arrayone = array("bacon" => "tasty", "lettuce", "carrot");
$arraytwo = array("ham" => "tasty", "carrot");
$differences = array_diff($arrayone, $arraytwo);
var_dump($differences);
$differences = array_diff($arraytwo, $arrayone);
var_dump($differences);
This will give:
array (size=1)
0 => string 'lettuce' (length=7)
array (size=0)
empty
One important thing is it only goes one way the first array is compared to the other ones passed.
http://php.net/manual/en/function.array-diff.php