CODEWITHSUNDEEP
phparrays
lisovaccaro
lisovaccaro

Reputation: 33956

Find various values in array?

I want to find the first occurrence of any of several values in an array.

$sentence = array(I, want, to, go, to, the, market);
if(in_array(array('swim','fly','go'), $sentence)) {
    // Should return KEY = 3 as 'go' was found in the third key of the array
    }

I'm sure this must be fairly common, how can it be done?

Upvotes: 1

Views: 111

Answers (5)

lisovaccaro
lisovaccaro

Reputation: 33956

function find_in_array($needles,$array) {
    $pos = false;
    foreach ($needles as $key => $value) {
        if (in_array($value, $array)) {
            if(!$pos || array_search($value, $array) < $pos) {
                $pos = array_search($value, $array);
                }
            }
        }
        return $pos;
    }

echo find_in_array($values,$sentence);

This is what I am using right now, I'm testing array_keys as suggested by Darian Brown

Upvotes: 0

Rupesh Patel
Rupesh Patel

Reputation: 3065

first of all you should read manual properly of in_array function , you were passing parameters in wrong order

$sentence = array(I, want, to, go, to, the, market);

 $found_key = array();   
 foreach($sentence as $key => $word)
    {
      if(in_array($word,array('swim','fly','go')))  
       { $found_keys[] = $key;}
    }
   print_r($found_keys);

I hope this is what you need

Upvotes: 0

Darian Brown
Darian Brown

Reputation: 168

array_keys would work a treat.

$keys = array_keys($sentence,array('swim','fly','go');

Then $keys will be a list of keys where swim, fly and go appear in $sentence

Just as the code below will return a list of keys that have empty values

$array = array('one','','three');
$keys = array_keys($array,"");

Upvotes: 0

bruchowski
bruchowski

Reputation: 5331

http://tr.php.net/manual/en/function.array-keys.php

I think more specifically you are looking for this type of functionality?

<?php
$array = array(0 => 100, "color" => "red");
print_r(array_keys($array));

$array = array("blue", "red", "green", "blue", "blue");
print_r(array_keys($array, "blue"));

$array = array("color" => array("blue", "red", "green"),
               "size"  => array("small", "medium", "large"));
print_r(array_keys($array));
?>

The above example will output:

Array
(
    [0] => 0
    [1] => color
)
Array
(
    [0] => 0
    [1] => 3
    [2] => 4
)
Array
(
    [0] => color
    [1] => size
)

Upvotes: 1

Praveen kalal
Praveen kalal

Reputation: 2129

Please use this function array_search it will return key of the element if element found in the array

Example

$array = array(0 => 'blue', 1 => 'red', 2 => 'green', 3 => 'red');

$key = array_search('green', $array); // $key = 2;
$key = array_search('red', $array);   // $key = 1;

Upvotes: 0

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