I have two variables as follows:
$string1 = '/test/10/25';
$string2 = '/test/[0-9]+/[0-9]+
Is it possible to make PHP compare these two strings and push the actual ID's (10 and 25) into an array like so by using the regex as some sort of guidance?
Array
(
[0] => 10
[1] => 25
)
I tried playing around with preg_match() but this just puts everything into the same array key.
This will work for you
<?php
$string1 = '/test/10/25';
$string2 = '/\/test\/([0-9]+)\/([0-9]+)/';
$matches = [];
preg_match($string2, $string1, $matches);
$array = [];
for($i = 1; $i < count($matches); $i ++)
{
array_push($array, $matches[$i]);
}
print_r($array);
$array will have the matches inside. I had to change the regex string because it was not "valid" for php.
Related
Seems to be very simple but I'm like, losing a lot of time on this... and no success...
If I have a string:
$str = "She sells seashells"
So I turn every word into an array element
$array = explode(" ", $str);
What I need is, every word receive the ancestor element (if any) and the next ones...
Example result in json format (more easy to show)
"{"She":["sells","seashells"],"sells":["She","seashells"],"seashells":["She","sells"]}"
Can somebody help?
Thanks!
Really, you can copy a source array for each key, excluding that key:
$str = "She sells seashells";
$array = explode(" ", $str);
$res = [];
for($i = 0; $i < count($array); $i++) {
$res[$array[$i]] = $array;
unset($res[$array[$i]][$i]);
}
print_r($res);
demo
<?php
$str = "She sells seashells";
$arr = explode(" ",$str);
$length = count($arr);
$result = [];
for($i = 0;$i < $length;++$i){
$result[$arr[$i]] = [];
foreach ($arr as $each_val) {
if($each_val === $arr[$i]) continue;
$result[$arr[$i]][] = $each_val;
}
}
echo json_encode($result);
OUTPUT:
{"She":["sells","seashells"],"sells":["She","seashells"],"seashells":["She","sells"]}
Explode the string based on spaces.
Have a result array and make the current iteration value in for loop as the key for it.
Loop again over the array and check if current value matches with outer for loop value. If yes, then continue, else add that value in this result array key.
In the end, json_encode() it and you are done.
I have a php string formed by images and corresponding prices like OK Like
$myString = "ddb94-b_mgr3043.jpg,3800,83acc-b_mgr3059.jpg,4100";
I know that if I do:
$myArray = explode(',', $myString);
print_r($myArray);
I will get :
Array
(
[0] => ddb94-b_mgr3043.jpg
[1] => 3800
[2] => 83acc-b_mgr3059.jpg
[3] => 4100
)
But How could I split the string so I can have an associative array of the form?
Array
(
"ddb94-b_mgr3043.jpg" => "3800"
"83acc-b_mgr3059.jpg" => "4100"
)
Easier way to do like below:-
<?php
$myString = "ddb94-b_mgr3043.jpg,3800,83acc-b_mgr3059.jpg,4100";
$chunks = array_chunk(explode(',', $myString), 2); //chunk array into 2-2 combination
$final_array = array();
foreach($chunks as $chunk){ //iterate over array
$final_array[trim($chunk[0])] = trim($chunk[1]);//make key value pair
}
print_r($final_array); //print final array
Output:-https://eval.in/859757
Here is another approach to achieve this,
$myString = "ddb94-b_mgr3043.jpg,3800,83acc-b_mgr3059.jpg,4100,test.jpg,12321";
$arr = explode(",",$myString);
$temp = [];
array_walk($arr, function($item,$i) use (&$temp,$arr){
if($i % 2 != 0) // checking for odd values
$temp[$arr[$i-1]] = $item; // key will be even values
});
print_r($temp);
array_walk - Apply a user supplied function to every member of an array
Here is your working demo.
Try this Code... If you will receive all the key and value is equal it will work...
$myString = "ddb94-b_mgr3043.jpg,3800,83acc-b_mgr3059.jpg,4100";
$myArray = explode(',', $myString);
$how_many = count($myArray)/2;
for($i = 0; $i <= $how_many; $i = $i + 2){
$key = $myArray[$i];
$value = $myArray[$i+1];
// store it here
$arra[$key] = $value;
}
print_r($arra);
I am new to PHP Development and finally with the help of SO I am able to write a program for finding word in a sentence with maximum specific character count.
Below is what I have tried:
<?php
// Program to find the word in a sentence with maximum specific character count
// Example: "O Romeo, Romeo, wherefore art thou Romeo?”
// Solution: wherefore
// Explanation: Because "e" came three times
$content = file_get_contents($argv[1]); // Reading content of file
$max = 0;
$arr = explode(" ", $content); // entire array of strings with file contents
for($x =0; $x<count($arr); $x++) // looping through entire array
{
$array[$x] = str_split($arr[$x]); // converting each of the string into array
}
for($x = 0; $x < count($arr); $x++)
{
$count = array_count_values($array[$x]);
$curr_max = max($count);
if($curr_max > $max)
{
$max = $curr_max;
$word = $arr[$x];
}
}
echo $word;
?>
Question: Since I am new to PHP development I don't know the optimization techniques. Is there anyway I can optimize this code? Also, Can I use regex to optimize this code further? Kindly guide.
I love coding this type of mini-challenges in the minimum lines of code :D. So here is my solution:
function wordsWithMaxCharFrequency($sentence) {
$words = preg_split('/\s+/', $sentence);
$maxCharsFrequency = array_map (function($word) {
return max(count_chars(strtolower($word)));
}, $words);
return array_map(function($index) use($words) {
return $words[$index];
}, array_keys($maxCharsFrequency, max($maxCharsFrequency)));
}
print_r(wordsWithMaxCharFrequency("eeee yyyy"));
//Output: Array ( [0] => eeee [1] => yyyy )
print_r(wordsWithMaxCharFrequency("xx llll x"));
//Output: Array ( [0] => llll )
Update1:
If you want to get only A-Za-z words use the following code:
$matches = [];
//a word is either followed by a space or end of input
preg_match_all('/([a-z]+)(?=\s|$)/i', $sentence, $matches);
$words = $matches[1];
Just a contribution that could inspire you :D!
Good Luck.
i am receiving the name from the $request in php.I want to do something like to add all the letters of the name in the array during the request e.g
$name=$_request['name'];
say $name='test';
i want to save it in an array in this format as array("t","e","s","t").
how can i do it ?
str_split is your friend.
$split_string = str_split($name);
It may be sufficient for you to access the string directly as an array, without the need to format the data:
$a = 'abcde';
echo $a[2];
Will output
c
However you won't be able to perform some array operations, such as foreach
see the php site
so it would be like
$name= 'test';
$arr1 = str_split($name);
would result in a array like:
Array
(
[0] => t
[1] => e
[2] => s
[3] => t
)
Here you go
$i = 0;
while(isset($name[$i])) {
$nameArray[$i] = $name[$i];
$i++;
}
Try this:
$letters = array();
for (int $i=0; $i < strlen($name); $i++){
$letters[] = $name[$i];
}
and you can access it with:
for (int $i=0; $i < strlen($letters); $i++){
$letters[$i];
}
I have string:
ABCDEFGHIJK
And I have two arrays of positions in that string that I want to insert different things to.
Array
(
[0] => 0
[1] => 5
)
Array
(
[0] => 7
[1] => 9
)
Which if I decided to add the # character and the = character, it'd produce:
#ABCDE=FG#HI=JK
Is there any way I can do this without a complicated set of substr?
Also, # and = need to be variables that can be of any length, not just one character.
You can use string as array
$str = "ABCDEFGH";
$characters = preg_split('//', $str, -1);
And afterwards you array_splice to insert '#' or '=' to position given by array
Return the array back to string is done by:
$str = implode("",$str);
This works for any number of characters (I am using "#a" and "=b" as the character sequences):
function array_insert($array,$pos,$val)
{
$array2 = array_splice($array,$pos);
$array[] = $val;
$array = array_merge($array,$array2);
return $array;
}
$s = "ABCDEFGHIJK";
$arr = str_split($s);
$arr_add1 = array(0=>0, 1=>5);
$arr_add2 = array(0=>7, 1=>9);
$char1 = '#a';
$char2 = '=b';
$arr = array_insert($arr, $arr_add1[0], $char1);
$arr = array_insert($arr, $arr_add1[1] + strlen($char1), $char2);
$arr = array_insert($arr, $arr_add2[0]+ strlen($char1)+ strlen($char2), $char1);
$arr = array_insert($arr, $arr_add2[1]+ strlen($char1)+ strlen($char2) + strlen($char1), $char2);
$s = implode("", $arr);
print_r($s);
There is an easy function for that: substr_replace. But for this to work, you would have to structure you array differently (which would be more structured anyway), e.g.:
$replacement = array(
0 => '#',
5 => '=',
7 => '#',
9 => '='
);
Then sort the array by keys descending, using krsort:
krsort($replacement);
And then you just need to loop over the array:
$str = "ABCDEFGHIJK";
foreach($replacement as $position => $rep) {
$str = substr_replace($str, $rep, $position, 0);
}
echo $str; // prints #ABCDE=FG#HI=JK
This works by inserting the replacements starting from the end of string. And it would work with any replacement string without having to determine the length of that string.
Working DEMO