PHP in_array if only item

Question

I am using in_array to detect if a value is within a PHP array, my array looks like this...

$fruits = array("banana", "grape", "orange", "apple");

/* is grape in the array */
if (in_array('grape', $fruits)) {
    echo 'Grape Detected';
} else {
    echo 'Grape not detected';
}

I am trying to modify this so that it can also detect when the 'grape' is the only item in the array, so if the array looked like this...

$fruits = array("grape", "grape", "grape");

or...

$fruits = array("grape");

Then I could display a custom message, anyone have an example I can see?

score 2 · Accepted Answer · 2017-06-13 23:46:12Z

2

Check if there isn't more than one element, and if it matches your condition.

if(count($fruits) === 1 && in_array('grape', $fruits)) {
    echo "There's only one fruit here, and it's a grape!";
}

EDIT:

You can check if 'grape' is the only thing in the array and also how many of it are there that way:

$condition_met = false;
foreach ($fruits as &$iterator) {
    if($iterator !== 'grape') {
        $condition_met = true;
    }
}

if($condition_met === false)
{
    echo 'There are only grapes in this fruits basket! There are ' . count($fruits) . ' unique beauties!';
}

edited Jun 13, 2017 at 23:46

answered Jun 13, 2017 at 23:32

user8104581

Sign up to request clarification or add additional context in comments.

2 Comments

fightstarr20 Over a year ago

This only works for the first array though, how about if the array has only grapes but more than one of them?

user8104581 Over a year ago

Well, that's not what the question asked at first. It says 'is the only item in the array'

manRo · Accepted Answer · 2017-06-13 23:56:24Z

1

To display custom message only when 'grape' is the only fruit in the list you can do it by changing your code to:

/* is grape in the array */
if (in_array('grape', $fruits)) {
    if (count(array_unique($fruits)) === 1) {
        echo 'Grape is the only fruit in the list';
    } else {
        echo 'Grape detected';
    }
} else {
    echo 'Grape not detected';
}

answered Jun 13, 2017 at 23:56

manRo

1,4751 gold badge14 silver badges19 bronze badges

Comments

Cave Johnson · Accepted Answer · 2017-06-14 00:20:05Z

1

Here is the simplest way to do that:

if (array_unique($fruits) === array('grape')) {
    echo 'Grape Detected';
}

Explanation: array_unique removes all duplicate values from an array. If "grape" is the only item in the array, the result of array_unique($fruits) should be equal to array('grape'). The === operator checks that both values are arrays and they both have the same elements.

answered Jun 14, 2017 at 0:20

Cave Johnson

6,8805 gold badges44 silver badges62 bronze badges

Comments

Jaydeep Mor · Accepted Answer · 2017-06-14 04:52:43Z

0

Try this,

Using array_count_values in-built function.

<?php
$fruits = array("banana", "grape", "orange", "apple","grape", "grape",     "grape");
$tmp_fruits = array_count_values($fruits);
/* is grape in the array */
foreach($tmp_fruits as $fruit=>$total){
    echo $fruit." Detected ".$total." Times."."<br />";
}
?>

answered Jun 14, 2017 at 4:52

Jaydeep Mor

1,7233 gold badges22 silver badges42 bronze badges

Comments

Brian Moreno · Accepted Answer · 2017-06-13 23:36:00Z

-1

You can use the function array_count_values(). This will return a new array with the number of times an item was repeated.

<?php
    $fruits = array("grape", "grape", "grapr");

    $vals = array_count_values($fruits);
    echo 'Unique Items: '.count($vals).'<br><br>';
    print_r($vals);
?>

Will output:

Unique Items: 2

Array ( [grape] => 2 [grapr] => 1 ) //Shows the item in the array and how many times it was repeated

You can then loop through the new array, $vals, to find out how many times an item was repeated and display the corresponding message.

Hopefully it helps you out.

edited Jun 13, 2017 at 23:36

answered Jun 13, 2017 at 23:30

Brian Moreno

1,0374 gold badges12 silver badges40 bronze badges

Comments

gview · Accepted Answer · 2017-06-14 00:00:56Z

-1

Here's a check that is true if:

Array only has 'Grape'
Regardless of whether or not there are multiple 'Grape' entries

$uniqueFruits = array_unique($fruit);

if (count($uniqueFruits) == 1 && $uniqueFruits[0] == 'grape') {
     // Only 'grape' in here
} elseif() {
  // Some other check
} else {
  // Otherwise
}

edited Jun 14, 2017 at 0:00

answered Jun 13, 2017 at 23:54

gview

15.5k3 gold badges53 silver badges56 bronze badges

Collectives™ on Stack Overflow

PHP in_array if only item

6 Answers 6

2 Comments

Comments

Comments

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

6 Answers 6

2 Comments

Comments

Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related