How to check array empty or not in php

Question

I am having huge array. Its structure is like this:

Array
(
    [0] => Array
        (
            [id] => 57060
            [customer] => 1         
            [desc] => Customer Object
                (
                    [id] => 51716
                    [name] => abc xyz           
                    [supplier] => stdClass Object
                        (
                            [@size] => 1
                            [Supplier] => stdClass Object
                                (
                                    [@chainCode] => EP
                                    [@id] => 13
                                )
                        )

                    [Types] => stdClass Object
                        (
                            [@size] => 9
                            [Type] => Array
                                (
                                    [0] => stdClass Object
                                        (
                                            [@Code] => 394431
                                            [@TypeId] => 497374                                
                                                (
                                                    [@size] => 27
                                                    [Amenity] => Array
                                                        (
                                                            [0] => stdClass Object
                                                                (
                                                                    [@amenityId] => 8149624
                                                                    [amenity] => Air Conditioning
                                                                )

                                                            [1] => stdClass Object
                                                                (
                                                                    [@amenityId] => 8149701
                                                                    [amenity] => 
                                                                )
                                                          )
                                                          .....
                                                          ..... and so on

I trying to check simply if the above array is empty or not.

<table>
    <tr>
        <td><b>View my Reviews</b></td>
    </tr>

    <tr>
        <td colspan=10>
            <div></div>
        </td>
    </tr>

    <?php
    if (!empty($this->revArr)) {
        foreach ($this->revArr as $review):
            ?>
            <tr>
                <td class="col1">
                    <?php echo ($review['name'] == '') ? 'a guest' : $review['name']; ?> <br/>on <span style="font-size:11px;"><?php echo date("M j, Y", strtotime($review['created_at'])); ?></span>

                </td>
                <td class="col2">                   
                    <span class="name"><a href="/hotelreview/<?php echo $review['hotelId']; ?>"><?php echo $review['Info']->Name; ?></a></span>
                    <br/>
                    <span class="address"><?php
                echo $review['Info']->address1;
                if ($review['Info']->address2 != '') {
                    echo ' ' . $review['Info']->address2;
                }
                if ($review['Info']->address3 != '') {
                    echo ' ' . $review['hotelInfo']->address3;
                }
                ?></span>

                    <div style="margin-top:10px;">
                        <h4><b><?php echo ($review['title'] == '') ? 'A Review By' : $review['title']; ?></b></h4>
                        <p><?php
                $detail = str_replace("\r", "\n", $review['detail']);
                $detail = preg_replace("#\n+#", "\n", $detail);
                echo str_replace("\n", "</p><p>", $detail);
                        ?></p>
                    </div>
                </td>
            </tr>

        <?php endforeach; ?>  
        <tr>
            <td colspan=10 style="text-align:right;">
                <?php echo $pagination; ?>                
            </td>
        </tr>
    <?php } {
        ?>
        <tr style="text-align: center;">
            <td>No Review Found !!</td>
        </tr>
    <?php }
    ?>
</table>

Where I am going wrong? Why above all conditions are not working?

Need Help.

Thanks.

Simply you can check if an array is empty or not using if(empty($arrayName)). — The Alpha
– The Alpha, Commented Jan 12, 2013 at 5:57
There was a similar question yesterday. The problem was actually the part of the code posted was in a function and the variable wasn't being passed or global. Because the person didn't post enough code it took them an hour to work out instead of finding an answer in minutes. Please post more relevant code. — Popnoodles
– Popnoodles, Commented Jan 12, 2013 at 6:03

RockyFord · Accepted Answer · 2013-01-12 08:10:46Z

3

Could it be that you just forgot the else? From what I see this code will always output

"No Data Found"

even if data is present. If data is present it should also output the data as requested.

//snippet
<?php endforeach; ?>  
        <tr>
            <td colspan=10 style="text-align:right;">
                <?php echo $pagination; ?>                
            </td>
        </tr>
    <?php } else {//there should be an else here
        ?>
        <tr style="text-align: center;">
            <td>No Review Found !!</td>
        </tr>
    <?php }
    ?>
</table>

Are you sure your api returns nothing if it fails to find the data? Most times an api will return False or an error array on failure so testing for empty may not be appropriate.

Good Luck.

answered Jan 12, 2013 at 8:10

RockyFord

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Comments

Gareth Cornish · Accepted Answer · 2013-01-12 06:03:06Z

0

You might try:

if(is_array($this->revArr) && count($this->revArr)){
  //code for displaying array information
}else{
   echo "No data found";
}

The count function will return true if the variable is a string, so you need to check that it is an array first.

answered Jan 12, 2013 at 6:03

Gareth Cornish

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5 Comments

Gareth Cornish Over a year ago

What does "not working" mean? Is it letting through empty arrays, or is it not letting through populated arrays?

J.K.A. Over a year ago

its still going in else condition.

Gareth Cornish Over a year ago

The either $this->revArr is not an array, or it contains no data. There is no other option. What happens when you do a var_dump just before the if statement?

J.K.A. Over a year ago

var_dump prints the array

Gareth Cornish Over a year ago

And what happens when you add this just before the if statement: echo gettype($this->revArr);

The One · Accepted Answer · 2013-01-12 06:08:59Z

0

Take a Look: empty

isset

is_array

answered Jan 12, 2013 at 6:08

The One

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1 Comment

The One Over a year ago

<?php function array_empty($mixed) {     if (is_array($mixed)) {         foreach ($mixed as $value) {             if (!array_empty($value)) {                 return false;             }         }     }     elseif (!empty($mixed)) {         return false;     }     return true; } ?>

Peter · Accepted Answer · 2013-01-12 07:42:20Z

0

okay try these 2 steps

reset($array_name)
key = key($array_name)

it will return NULL if there is no key otherwise returns the first key

answered Jan 12, 2013 at 7:42

Peter

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Comments

Turab · Accepted Answer · 2014-05-13 14:54:49Z

0

You can use this function to check if an array is empty. There is no other easy way.

// Checks if an array is empty by values recursively.
// If check_all_elements is true, all the elements will be required to be not empty.
function is_array_empty($array, $check_all_elements = false)
{
    if (!is_array($array) || empty($array))
        return true;

    $elements = count($array);
    foreach ($array as $element)
    {
        if (empty($element) || (is_array($element) && is_array_empty($element, $check_all_elements)))
        {
            if ($check_all_elements)
                return true;
            else $elements--;
        }
    }
    return empty($elements);
}

answered May 13, 2014 at 14:54

Turab

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