How to Check Whether an Array Is Empty Using PHP

How to check whether an array is empty using PHP?

If you just need to check if there are ANY elements in the array, you can use either the array itself, due to PHP's loose typing, or - if you prefer a stricter approach - use count():

if (!$playerlist) {
     // list is empty.
}
if (count($playerlist) === 0) {
     // list is empty.
}

If you need to clean out empty values before checking (generally done to prevent explodeing weird strings):

foreach ($playerlist as $key => $value) {
    if (!strlen($value)) {
       unset($playerlist[$key]);
    }
}
if (!$playerlist) {
   //empty array
}

Check whether an array is empty

There are two elements in array and this definitely doesn't mean that array is empty. As a quick workaround you can do following:

$errors = array_filter($errors);

if (!empty($errors)) {
}

array_filter() function's default behavior will remove all values from array which are equal to null, 0, '' or false.

Otherwise in your particular case empty() construct will always return true if there is at least one element even with "empty" value.

Find if an array is empty in PHP

Your array is not empty, you have assigned 4 keys without value.

empty($array_new)    // false
empty($array_new[0]) // true

To remove empty values from array use:

$filtered = array_filter($array_new, function ($var) {
    return !is_null($var);
});

Documentation:

• empty()
• array_filter()

Wordpress - How to check whether an array is empty using PHP?

PHP has an in-built function called empty() - https://secure.php.net/manual/en/function.empty.php

this is good for a lot of thing, including checking empty arrays. You can use like this:

if (empty($array)) {
    # array is empty
}

or

if (!empty($array)) {
    # array is not empty
}

PHP Checking if Array is empty logic not working

Use empty() function.

empty() - it will return true if the variable is an empty string, false, array(), NULL, “0?, 0, and an unset variable.

Syntax

empty(var_name)

Return value

FALSE if var_name has a non-empty and non-zero value.

Value Type :

Boolean

List of empty things :

• "0" (0 as a string)
• 0 (0 as an integer)
• "" (an empty string)
• NULL
• FALSE
• "" (an empty string)
• array() (an empty array)
• $var_name; (a variable declared but without a value in a class)

Code

if (!empty($_SESSION['selectedItemIDs']) ) {
    // update the selections in a database
} else {
    // nothing selection so just record this in a variable
$selectedItems = 'no selected items were made';
}

Check if array is empty

PHP

Simply use empty(), i.e.

if(empty($rows)){
    echo 'No Data';
}

Alternatively you could also use count(), i.e.

if(count($rows) < 1){ // or if(count($rows) === 0)
    echo 'No Data';
}

JavaScript

You can use the length property

if(treeData.length == 0){
    $("button").hide();
}

Check if array empty in php

Run array_filter() to remove empty entries, then check if the array itself is empty()

if (empty(array_filter($addr)))

Note that array_filter() without a callback will remove any "falsey" entries, including 0

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