How can I replace a string/word that's inside a multidimensional array with a new value? I don't have its key, just know the haystack and the needle.
Say I have a multidimensional array, $submenu_arr, (don't know how many dimensions).
I want to find a value inside one of these arrays and replace it with a new value.
Actually for a translation.
Like:
recursive_arr_translation('Article', $submenu_arr, 'Artigo');//"Artigo" is a Portuguese word for "Article".
I've tried this, but not working:
function in_array_r($needle, $haystack, $new_value) {
$found = false;
foreach ($haystack as $key=>$value) {
if ($value === $needle) {
$found = true;
$haystack[$key] = $new_value;
return true;
} elseif (is_array($value)) {
$found = in_array_r($needle, $haystack[$key], $new_value);
if($found) {
return true;
}
}
}
return $found;
}
in_array_r('Article', $submenu, 'Artigo');
in_array_r('Location', $submenu, 'Localização');
EDIT: Is working, but somehow, I don't get it working, I'm trying to translate a WordPress submenu word.
You can use array_walk_recursive as suggested in the comments, and pass your original array as reference, allowing us to edit it.
<?php
$a = array("Giraffe", "Monkey", "Elephant", "Snake", 5, "other" => array("apple", "orange"));
array_walk_recursive($a, function(&$a) {
if($a == "apple") {
$a = "Banana";
}
});
echo print_r($a, true);
https://eval.in/198978
So, now we have the basic logic, let's create a function with 3 parameters.
function replace_in_array($find, $replace, &$array) {
array_walk_recursive($array, function(&$array) use($find, $replace) {
if($array == $find) {
$array= $replace;
}
});
return $array;
}
$a = array("Giraffe", "Monkey", "Elephant", "Snake", 5, "other" => array("apple", "orange"));
echo print_r( replace_in_array("apple", "banana", $a), true);
https://eval.in/198989
Related
I have an array, say
$updates = array();
$updates['U1'] = array('F1', 'F2', 'F5');
$updates['U2'] = array('F3');
$updates['U3'] = array('F3', 'F4');
I need search for a value say F5 so it should return the key U1.
And also if there is multiple occurrence of a value, should return the last key.
Eg. searching F3 should return U3 and not U2.
I have searched a lot and can't find a way. I am looking for a solution without using loops.
without using loop:
function findArrVal($arr = [], $param){
static $indx = 0;
if($indx == 0){
krsort($arr);
}
$keys = array_keys($arr);
$values = array_values($arr);
if( count($values) == $indx ){
return false;
} else if( is_array($values[$indx]) && in_array($param, $values[$indx])){
return $keys[$indx];
} else {
++$indx;
return findArrVal($arr, $param);
}
return FALSE;
}
using loop:
function findArrVal($arr = [], $param){
krsort($arr);
foreach($arr as $key => $ar){
if(is_array($ar) && in_array($param, $ar)){
return $key;
}
}
return FALSE;
}
findArrVal($updates,'F3');
krsort - sorts the array in reverse order. ( to find the value at first occurrence )
is_array to check if the child value is an array type.
in_array to find the item on the child array.
Maybe It's helpful for you.
function _getFindArrayKey(array $arr, $key)
{
if (array_key_exists($key, $arr)) {
return true;
}
// check arrays contained in this array
foreach ($arr as $element) {
if (is_array($element)) {
if (_getFindArrayKey($element, $key)) {
return true;
}
}
}
return false;
}
When I query the data within the foreach loop it works, but makes a duplicate for each pass in the loop. I try to var_dump it anywhere else outside the loop and the data isn't there. Why won't my data persist outside the forEach loop?
<?php
$old_array = [10-2, 13=>"3452", 4=>"Green",
5=>"Green", 6=>"Blue", "green"=>"green",
"two"=>"green" ,"2"=>"green" , "rulebreak" =>"GrEeN",
"ninja"=>" Green ", ["blue" => "green", "green"=>"green", 2 => "itsGreen"] ];
$newArray = array();
function filter_Green($array) {
$find = "green";
$replace = "not green";
/* Same result as using str_replace on an array, but does so recursively for multi-dimensional arrays */
/* found here:
if (!is_array($array)) {
/* Used ireplace so that searches can be case insensitive */
return str_ireplace($find, $replace, $array);
}
foreach ($array as $key => $value) {
$newArray[$key] = $value;
if ($key == "green") {
$newArray[$key] = "not green";
}
if ($value == "green") {
$newArray[$value] = "not green";
}
}
return $newArray;
}
filter_Green($old_array);
var_dump($newArray);
?>
Expectation: When I run the function it should replace all instances of "green" with "not green" and save those into a $newArray. I have it returning $newArray but even then it doesn't seem to match up that the values are being saved into the newArray, hence why I'm doing var_dump to check if it's even working (it appears to not be)
Results: as it is setup, I get an empty array returned to me...It seems to work somewhat if I move var_dump($newArray) to within the foreach loop but that then duplicates the data for each pass.
if you want var_dump $newArray out side the function then you should declare $newArray as global in your function
<?php
$old_array = [10-2, 13=>"3452", 4=>"Green", 5=>"Green", 6=>"Blue", "green"=>"green", "two"=>"green" ,"2"=>"green" , "rulebreak" =>"GrEeN", "ninja"=>" Green ", ["blue" => "green", "green"=>"green", 2 => "itsGreen"] ];
$newArray = array();
function filter_Green($array) {
global $newArray;
$find = "green";
$replace = "not green";
/* Same result as using str_replace on an array, but does so recursively for multi-dimensional arrays */
if (!is_array($array)) {
/* Used ireplace so that searches can be case insensitive */
return str_ireplace($find, $replace, $array);
}
foreach ($array as $key => $value) {
$newArray[$key] = $value;
if ($key == "green") {
$newArray[$key] = "not green";
}
if ($value == "green") {
$newArray[$value] = "not green";
}
}
return $newArray;
}
filter_Green($old_array);
var_dump($newArray);
?>
But instead of declaring global in function, use returned value by filter_Green($old_array); as below
$result = filter_Green($old_array);
var_dump($result);
I'm trying to find a part of a string in a multidimentional array.
foreach ($invitees as $invitee) {
if (in_array($invitee, $result)){
echo 'YES';
} else {
echo 'NO';
}
}
the $invitees array has 2 elements:
and $result is what I get from my Drupal database using db_select()
What I'm trying to do is, if the first part from one of the emails in $invitees is in $result it should echo "YES". (the part before the "#" charather)
For example:
"test.email" is in $result, so => YES
"user.one" is not in $result, so => NO
How do i do this? How can I search for a part of a string in a multidimentional array?
Sidenote: I noticed that the array I get from Drupal ($result) has 2 "Objects" which contain a "String", and not arrays like I would expect.
For example:
$test = array('red', 'green', array('apple', 'banana'));
Difference between $result and $test:
Does this have any effect on how I should search for my string?
Because $result is an array of objects, you'll need to use a method to access the value and compare it. So, for instance you could do:
//1: create new array $results from array of objects in $result
foreach ($result as $r) {
$results[] = get_object_vars($r);
}
//2: expanded, recursive in_array function for use with multidimensional arrays
function in_array_r($needle, $haystack, $strict = false) {
foreach ($haystack as $item) {
if (($strict ? $item === $needle : $item == $needle) || (is_array($item) && in_array_r($needle, $item, $strict))) {
return true;
}
}
return false;
}
//3: check each element of the $invitees array
foreach ($invitees as $invitee) {
echo in_array_r($invitee, $results) ? "Yes" : "No";
}
Also, for some illumination, check out this answer.
You can search through the array using preg_grep, and use a wildcard for anything before and after it. If it returns a value (or values), use key to get the index of the first one. Then do a check if its greater than or equal to 0, which means it found a match :)
<?php
$array = array('test1#gdfgfdg.com', 'test2#dgdgfdg.com', 'test3#dfgfdgdfg');
$invitee = 'test2';
$result = key(preg_grep('/^.*'.$invitee.'.*/', $array));
if ($result >= 0) {
echo 'YES';
} else {
echo 'NO';
}
?>
Accepted larsAnders's answer since he pointed me in to direction of recursive functions.
This is what I ended up using (bases on his answer):
function Array_search($array, $string) {
foreach ($array as $key => $value) {
if (is_array($value)) {
Array_search($array[$key], $string);
} else {
if ($value->data == $string) {
return TRUE;
}
}
}
return FALSE;
}
hello i would like to create a function that checks if an etry contains some words.
for my login-script i would like to create a function that checks if the $_POST has some keywords in it.
therfor i have thought to create an array that contains the words i'm looking for like that:
function value_check($a, $b){
$haystack = array ($a, $b)
$words = array ("abc", "def");
if(strpos($haystack, $words) === true) {
return ($a or $b, or both where strpos === true);
}
return false;
}
and i would like to call that function by:
$valid_value = value_check($a, $b);
if ($valid_value['a'] === true) {
//do something
}
if ($valid_value['b'] === true) {
//do something
}
thanks alot.
Okay, to clarify my question i would like to shorten my code. instead of using:
...else if ($a === "abc" || $a === "Abc" ) {
$errors['a'][] = "text";
}else if ($b === "def" || $a === "Def" ) {
$errors['b'][] = "text";
}
i thought i can do it a little bit more comfortable while using a function that checks easily if there is a that specific string in that array. hope it will be clear now. thanks.
Read this in_array for search in array. And this explode for creating an array from a string like Ascherer suggested.
function value_check ($haystack) {
foreach ($words as $element) {
if (in_array($element,$haystack) {
$result[] = $element;
}
}
return $result;
}
a call
$somestuff = array($a,$b);
$valid_value = value_check ($somestuff);
foreach ($valid_value as $value) {
// do something
}
I am trying to write a piece of code that searches one column of 2-D array values and returns the key when it finds it. Right now I have two functions, one to find a value and return a boolean true or false and another (not working) to return the key. I would like to merge the two in the sense of preserving the recursive nature of the finding function but returning a key. I cannot think how to do both in one function, but working key finder would be much appreciated.
Thanks
function in_array_r($needle, $haystack, $strict = true) {
foreach ($haystack as $item) {
if (($strict ? $item === $needle : $item == $needle) || (is_array($item) && in_array_r($needle, $item, $strict))) {
return true;
}
}
return false;
}
function loopAndFind($array, $index, $search){
$returnArray = array();
foreach($array as $k=>$v){
if($v[$index] == $search){
$returnArray[] = $k;
}
}
return $returnArray;
}`
Sorry, I meant to add an example. For instance:
Array [0]{
[0]=hello
[1]=6
}
[1]
{
[0]=world
[1]=4
}
and I want to search the array by the [x][0] index to check each string of words for the search term. If found, it should give back the index/key in the main array like "world" returns 1
This works:
$array = array(array('hello', 6), array('world', 4));
$searchTerm = 'world';
foreach ($array as $childKey => $childArray) {
if ($childArray['0'] == $searchTerm) {
echo $childKey; //Your Result
}
}
You already have all you need in your first function. PHP does the rest:
$findings = array_map('in_array_r', $haystack);
$findings = array_filter($findings); # remove all not found
var_dump(array_keys($findings)); # the keys you look for