PHP How to remove specific element from an array

Question

How do I remove an element from an array when I know the elements name  for example   I have an array    array   array  apple    orange    strawberry    blueberry    kiwi      the user enters strawberry  strawberry is removed   To fully explain   I have a database that stores a list of items separated by a comma  The code pulls in the list based on a user choice where that choice is located  So  if they choose strawberry they code pulls in every entry were strawberry is located then converts that to an array using split    I want to them remove the user chosen items  for this example strawberry  from the array

User · Accepted Answer

Use array search to get the key and remove it with unset if found   if    key   array search  strawberry    array       false        unset  array  key        array search returns false  null until PHP 4 2 0  if no item has been found   And if there can be multiple items with the same value  you can use array keys to get the keys to all items   foreach  array keys  array   strawberry   as  key        unset  array  key

User · Answer

Use this simple way hope it will helpful foreach  array as  k   gt   value                       if  value     strawberry                       unset  array  k

User · Answer

This is a simple reiteration that can delete multiple values in the array          Your array      list   array  apple    orange    strawberry    lemon    banana            Initilize what to delete      delete val   array  orange    lemon    banana            Search for the array key and unset        foreach  delete val as  key            keyToDelete   array search  key   list           unset  list  keyToDelete

User · Answer

I was looking for the answer to the same question and came across this topic  I see two main ways  the combination of array search  amp  unset and the use of array diff  At first glance  it seemed to me that the first method would be faster  since does not require the creation of an additional array  as when using array diff   But I wrote a small benchmark and made sure that the second method is not only more concise  but also faster  Glad to share this with you       https   glot io snippets f6ow6biaol

User · Answer

This question has several answers but I want to add something more because when I used unset or array diff I had several problems to play with the indexes of the new array when the specific element was removed  because the initial index are saved   I get back to the example     array   array  apple    orange    strawberry    blueberry    kiwi     array without strawberries   array diff  array  array  strawberry       or   array   array  apple    orange    strawberry    blueberry    kiwi    unset  array array search  strawberry    array       If you print the result you will obtain    foreach   array without strawberries as  data       print r  data       Result     gt  apple  gt  orange  gt  blueberry  gt  kiwi   But the indexes will be saved and so you will access to your element like     array without strawberries 0   gt  apple  array without strawberries 1   gt  orange  array without strawberries 3   gt  blueberry  array without strawberries 4   gt  kiwi   And so the final array are not re-indexed  So you need to add after the unset or array diff    array without strawberries   array values  array     After that your array will have a normal index     array without strawberries 0   gt  apple  array without strawberries 1   gt  orange  array without strawberries 2   gt  blueberry  array without strawberries 3   gt  kiwi   Related to this post   Re-Index Array    Hope it will help

User · Answer

I m currently using this function   function array delete  del val   array        if is array  del val              foreach   del val as  del key   gt   del value                foreach   array as  key   gt   value                   if   value     del value                        unset  array  key                                                    else           foreach   array as  key   gt   value               if   value     del val                    unset  array  key                                      return array values  array       You can input an array or only a string with the element s  which should be removed  Write it like this    detils   array  apple    orange    strawberry    blueberry    kiwi     detils   array delete array  orange    apple     detils     OR   detils   array delete  orange    detils    It ll also reindex it

User · Answer

A better approach would maybe be to keep your values as keys in an associative array  and then call array keys   on it when you want to actual array  That way you don t need to use array search to find your element

User · Answer

detils   array  apple    orange    strawberry    blueberry    kiwi         function remove embpty  values                 if  values   orange                          values  any name                     return  values               detils array map  remove embpty   detils       print r  detils

User · Answer

You can use array filter to remove the items by a specific condition on  v    arr   array filter  arr  function  v       return  v     some value

User · Answer

remove   strawberry    array     apple    orange    strawberry    blueberry    kiwi    foreach   array as  key   gt   value            if   value   remove            echo  value   lt br  gt                    continue

User · Answer

unset  array array search  strawberry    array

User · Answer

lt  php   array   array  apple    orange    strawberry    blueberry    kiwi     delete    strawberry    index   array search  delete   array   array splice  array   index  1   var dump  array     gt

User · Answer

If you are using a plain array here  which seems like the case   you should be using this code instead   if    key   array search  strawberry    array       false        array splice  array   key  1       unset  array  key   only removes the element but does not reorder the plain array   Supposingly we have an array and use array splice    array   array  apple    orange    strawberry    blueberry    kiwi    array splice  array  2  1   json encode  array       yields the array   apple    orange    blueberry    kiwi     Compared to unset    array   array  apple    orange    strawberry    blueberry    kiwi    unset  array 2    json encode  array      yields an object   0    apple    1    orange    3    blueberry    4    kiwi     Notice how unset  array  key   does not reorder the array

User · Answer

I would prefer to use array key exists to search for keys in arrays like    Array  0   gt  A   1   gt  B    key   gt  value      to find the specified effectively  since array search and in array   don t work here  And do removing stuff with unset     I think it will help someone

User · Answer

Create numeric array with delete particular Array value      lt  php        create a  quot numeric quot  array      animals   array  monitor    cpu    mouse    ram    wifi    usb    pendrive           Normarl display     print r  animals       echo  quot  lt br  gt  lt br  gt  quot          If splice the array       array splice  animals  2  2       unset  animals 3       you can unset the particular value     print r  animals          gt   You Can Refer this link

User · Answer

The answer to PHP array delete by value  not key  Given by   https   stackoverflow com users 924109 rok-kralj   IMO is the best answer as it removes and does not mutate   array diff   312  401  15  401  3    401       removing 401 returns  312  15  3    It generalizes nicely  you can remove as many elements as you like at the same time  if you want   Disclaimer  Note that my solution produces a new copy of the array while keeping the old one intact in contrast to the accepted answer which mutates  It might be a bit slower because of this

User · Answer

foreach   get dept as  key5   gt   dept value                    if   request- gt role id    5     request- gt role id    6                       array splice  get dept   key5  1

User · Answer

Just u can do single line  it will be remove element from array    array array diff  array   strawberry

User · Answer

if  in array  strawberry    array          unset  array array search  strawberry   array

User · Answer

Use array diff   for 1 line solution    array   array  apple    orange    strawberry    blueberry    kiwi    strawberry      throw in another  strawberry  to demonstrate that it removes multiple instances of the string  array without strawberries   array diff  array  array  strawberry     print r  array without strawberries        No need for extra functions or foreach loop

User · Answer

Will be like this    function rmv val  var          return    var     strawberry           array   array  apple    orange    strawberry    blueberry    kiwi       array res   array filter  array   rmv val

User · Answer

Using array seach    try the following   if   key   array search  del val   messages       false        unset  messages  key        array search   returns the key of the element it finds  which can be used to remove that element from the original array using unset    It will return FALSE on failure  however it can return a  falsey  value on success  your key may be 0 for example   which is why the strict comparison     operator is used   The if   statement will check whether array search   returned a value  and will only perform an action if it did

[php] PHP: How to remove specific element from an array?

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