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“Is array to string conversion in PHP WordPress possible?”

When I echo $text I have this error array to string conversion.

How to solve this error?

function cd_meta_box_cb()
{
global $post;
$values = get_post_custom( $post->ID );
$text = isset( $values['video_meta_box_text'] ) ? $values['video_meta_box_text'] : '';
wp_nonce_field( 'video_meta_box_nonce', 'meta_box_nonce' );
?>
<p>

    <input type="text" name="video_meta_box_text" id="video_meta_box_text" value="<?php echo $text; ?>" />
</p>
<?php    
}
Tags:

2

Answers


  1. 0

    Some types are converted to string when printing, such as integer, other types require some conversions in order to get a proper string output.

    To get a string output of your array you must convert it into a string by yourself.

    First, make sure $text will always be an array, even an empty one. There are other ways, but I’m keeping to this simple one.

    $text = isset( $values['video_meta_box_text'] ) ? $values['video_meta_box_text'] : [];

    Then you can use the implode() function to chain all the values into a single string.

    <input type="text" name="video_meta_box_text" id="video_meta_box_text" value="<?php echo implode(', ', $text); ?>">

    I’ve used a , delimiter here but you can you whatever suit you.

    Note that this way won’t work if your array contains values such as objects.

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  2. 0

    Your data is saved in an array and you are trying to access it using only the array key.

    function cd_meta_box_cb() {
   global $post;
   $values = get_post_custom( $post->ID );

   //First, check to see if your array is not empty as it may still be set but without a value. Then return th efirst key of the array: [0]
   $text = !empty( $values['video_meta_box_text'] ) ? $values['video_meta_box_text'][0] : '';
   wp_nonce_field( 'video_meta_box_nonce', 'meta_box_nonce' );
?>
<p>

   <input type="text" name="video_meta_box_text" id="video_meta_box_text" value=" <?php echo $text; ?>" /></p>
<?php    
}
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