Check for a part of string within an array

Question

I want to check if a part of a string (not the full-string, as it will be variable) is present in an array.

$test = array(
  0 => 'my searcg',
  1 => 'set-cookie: shdugdd',
  2 => 'viable: dunno'
);

What i want is check if either of the keys has the string "set-cookie" and if so, return the key. I can't check for full string as the set-cookie value will differ every time. It might not be present as well, so need to check that as well.

I know i can loop through the array and check the same and get the results, but am looking for a more concise/efficient answer. Having trouble getting a solution.

The loop solution would be at most 3 lines - the for statement, the strpos check and a closing bracket. How more concise could it be? :) — laurent
– laurent, Commented Jan 17, 2013 at 9:11
what issues do you have with loop through the array and check the same and get the results ? — ianace
– ianace, Commented Jan 17, 2013 at 9:11
@Laurent Yeah, that won't be but was curious if it could be solved in a more generic way. Like an extended version of in_array, with strpos'ing. — web-nomad
– web-nomad, Commented Jan 17, 2013 at 9:13

cartina · Accepted Answer · 2013-01-17 09:34:56Z

10

foreach($test as $key=> $value)
{
  if (strpos($value,'set-cookie') !== false) 
 {
  echo $key; // print key containing searched string
  }
}

Here is another alternative. (working example)

   $matches = preg_grep('/set-cookie/', $test); 
    $keys    = array_keys($matches); 

    print_r($matches);

edited Jan 17, 2013 at 9:34

answered Jan 17, 2013 at 9:12

cartina

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3 Comments

web-nomad Over a year ago

I know this can be done as pointed in my post, but anyway thanks :)

cartina Over a year ago

@Pushpesh I have edited my answer with another alternative. Please check.

cartina Over a year ago

@Pushpesh I have added demo link to the answer.

Ms01 · Accepted Answer · 2013-01-17 09:13:53Z

1

function returnkey($arr) {
    foreach($arr as $key => $val) {
        if(strpos($val, 'set-cookie') !== false) {
            return $key;
        }
    } 
    return false;
}

answered Jan 17, 2013 at 9:13

Ms01

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Comments

Dhruv Patel · Accepted Answer · 2013-01-17 09:14:07Z

1

Hey there you can use array_walk function of php

Here is the detailed explanation.

http://php.net/manual/en/function.array-walk.php

Thanks.

answered Jan 17, 2013 at 9:14

Dhruv Patel

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Comments

Kao · Accepted Answer · 2013-01-17 09:31:25Z

0

A function to match $str in an array.

Use case: $key = strInArray ( 'set-cookie', $array );

function strInArray ( $str, $array ) {

    if ( array_walk ( $array, function ( $val, $key ) use ( &$data, $str ) {
        if ( strpos ( $val, $str ) !== false ) {
            $data = $key;
        }
    }));

    return $data;
}

answered Jan 17, 2013 at 9:31

Kao

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