Filter multidimensional array based on partial match of search value

Question

I'm looking for a function where given this array:

array(
 [0] =>
  array(
   ['text'] =>'I like Apples'
   ['id'] =>'102923'
 )
 [1] =>
  array(
   ['text'] =>'I like Apples and Bread'
   ['id'] =>'283923'
 )
 [2] =>
  array(
  ['text'] =>'I like Apples, Bread, and Cheese'
  ['id'] =>'3384823'
 )
 [3] =>
  array(
  ['text'] =>'I like Green Eggs and Ham'
  ['id'] =>'4473873'
 ) 
etc..

I want to search for the needle

"Bread"

and get the following result

[1] =>
  array(
   ['text'] =>'I like Apples and Bread'
   ['id'] =>'283923'
 )
 [2] =>
  array(
  ['text'] =>'I like Apples, Bread, and Cheese'
  ['id'] =>'3384823'

Jon Gauthier · Accepted Answer · 2011-08-03 20:57:57Z

59

Use array_filter. You can provide a callback which decides which elements remain in the array and which should be removed. (A return value of false from the callback indicates that the given element should be removed.) Something like this:

$search_text = 'Bread';

array_filter($array, function($el) use ($search_text) {
        return ( strpos($el['text'], $search_text) !== false );
    });

For more information:

edited Aug 3, 2011 at 20:57

answered Aug 3, 2011 at 19:56

Jon Gauthier

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6 Comments

Shi Over a year ago

Better use strpos(…) !== FALSE. This saves a function call and this is faster.

Chamilyan Over a year ago

Thanks Hans, out of curiosity what is the 'use' operator? Is it like the 'as' operator in an each loop? I can't find any info about it.

Jon Gauthier Over a year ago

The use keyword makes the variables you give it available in the function's scope. By default, inside that function $search_text would be undefined, and so we write use to have PHP "carry over" the variable into the local scope.

gavsiu Over a year ago

Why do I keep getting this error? Parse error: syntax error, unexpected T_FUNCTION I even tried copying the example straight from link

Jon Gauthier Over a year ago

@gavsiu stackoverflow.com/questions/6412032/…

|

mickmackusa · Accepted Answer · 2023-12-27 23:40:34Z

From PHP8, there is a new function to return a boolean value to express whether a substring occurs in a string (this is offered as a simpler replacement for strpos()).

str_contains()

If case-insensitivity is needed, then str_contains()'s case-sensitive matching will not suffice. Use stripos():

stripos($subarray['text'], $search) !== false

If word boundaries are needed then use a regular expression with \b metacharacters.

This would need to be called within an iterating function/construct.

From PHP7.4 arrow functions can be used reduce the overall syntax and invite global variables into the custom function's scope.

Code: (Demo)

$array = [
    ['text' => 'I like Apples', 'id' => '102923'],
    ['text' => 'I like Apples and Bread', 'id' =>'283923'],
    ['text' => 'I like Apples, Bread, and Cheese', 'id' => '3384823'],
    ['text' => 'I like Green Eggs and Ham', 'id' =>'4473873']
];

$search = 'Bread';
var_export(
    array_filter($array, fn($subarray) => str_contains($subarray['text'], $search))
);

Output:

array (
  1 => 
  array (
    'text' => 'I like Apples and Bread',
    'id' => '283923',
  ),
  2 => 
  array (
    'text' => 'I like Apples, Bread, and Cheese',
    'id' => '3384823',
  ),
)

amigura · Accepted Answer · 2011-08-03 21:14:42Z

1

is there a reason for multi array. is id unique and can it be used as index.

$data=array(

  array(
   'text' =>'I like Apples',
   'id' =>'102923'
 )
,
  array(
   'text' =>'I like Apples and Bread',
   'id' =>'283923'
 )
,
  array(
  'text' =>'I like Apples, Bread, and Cheese',
  'id' =>'3384823'
 )
,
  array(
  'text' =>'I like Green Eggs and Ham',
  'id' =>'4473873'
 )

 );

$findme='bread';

 foreach ($data as $k=>$v){

 if(stripos($v['text'], $findme) !== false){
 echo "id={$v[id]} text={$v[text]}<br />"; // do something $newdata=array($v[id]=>$v[text])
 }

 }

answered Aug 3, 2011 at 21:14

amigura

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