/**
* Resize images dynamically using wp built in functions
*
* @param string $img_url
* @param int $width
* @param int $height
* @param bool $crop
* @return array
*/
function themify_do_img($img_url = null, $width, $height, $crop = false)
{
$src = esc_url($img_url);
$upload_dir = wp_upload_dir();
$base_url = $upload_dir['baseurl'];
// Check if the image is an attachment. If it's external return url, width and height.
if (substr($src, -strlen($base_url)) === $base_url) {
return array('url' => $src, 'width' => $width, 'height' => $height);
}
// Get post's attachment meta data to look for references to the requested image size
$attachment_id = themify_get_attachment_id_from_url($src, $base_url);
// If no relationship between a post and a image size was found, return url, width and height.
if (!$attachment_id) {
return array('url' => $src, 'width' => $width, 'height' => $height);
}
// Go through the attachment meta data sizes looking for an image size match.
$meta = wp_get_attachment_metadata($attachment_id);
if (is_array($meta) && isset($meta['sizes']) && is_array($meta['sizes'])) {
foreach ($meta['sizes'] as $key => $size) {
if ($size['width'] == $width && $size['height'] == $height) {
setlocale(LC_CTYPE, get_locale() . '.UTF-8');
return array('url' => str_replace(basename($src), $size['file'], $src), 'width' => $width, 'height' => $height);
}
}
}
// Requested image size doesn't exists, so let's create one
if (true == $crop) {
add_filter('image_resize_dimensions', 'themify_img_resize_dimensions', 10, 5);
}
$image = themify_make_image_size($attachment_id, $width, $height, $meta, $src);
if (true == $crop) {
remove_filter('image_resize_dimensions', 'themify_img_resize_dimensions', 10);
}
return $image;
}
/**
* Resize images dynamically using wp built in functions
*
* @param string $img_url
* @param int $width
* @param int $height
* @param bool $crop
* @return array
*/
function themify_do_img($img_url = null, $width, $height, $crop = false)
{
$img_url = esc_url($img_url);
$upload_dir = wp_upload_dir();
$base_url = $upload_dir['baseurl'];
// Check if the image is an attachment. If it's external return url, width and height.
if (substr($img_url, -strlen($base_url)) === $base_url) {
return array('url' => $img_url, 'width' => $width, 'height' => $height);
}
// Get post's attachment meta data to look for references to the requested image size
$attachment_id = themify_get_attachment_id_from_url($img_url, $base_url);
// If no relationship between a post and a image size was found, return url, width and height.
if (!$attachment_id) {
return array('url' => $img_url, 'width' => $width, 'height' => $height);
}
// Fetch attachment meta data. Up to this point we know the attachment ID is valid.
$meta = wp_get_attachment_metadata($attachment_id);
// Go through the attachment meta data sizes looking for an image size match.
if (is_array($meta) && isset($meta['sizes']) && is_array($meta['sizes'])) {
// Perform calculations when height = 0
if (is_null($height) || 0 === $height || '0' === $height) {
// If width and height or original image are available as metadata
if (isset($meta['width']) && isset($meta['height'])) {
// Divide width by original image aspect ratio to obtain projected height
// The floor function is used so it returns an int and metadata can be written
$height = floor($width / ($meta['width'] / $meta['height']));
} else {
$height = 0;
}
}
foreach ($meta['sizes'] as $key => $size) {
if ($size['width'] == $width && $size['height'] == $height) {
setlocale(LC_CTYPE, get_locale() . '.UTF-8');
return array('url' => str_replace(basename($img_url), $size['file'], $img_url), 'width' => $width, 'height' => $height, 'attachment_id' => $attachment_id);
}
}
} elseif (is_array($meta) && (!isset($meta['sizes']) || !is_array($meta['sizes']))) {
// If the meta is an array, but doesn't have the 'sizes' element or if it has it, it's not an array,
// return original image since there's something wrong with this attachment meta data: it exists,
// but its format is not correct.
return array('url' => $img_url, 'width' => $width, 'height' => $height, 'attachment_id' => $attachment_id);
}
// Requested image size doesn't exists, so let's create one
if (true == $crop) {
add_filter('image_resize_dimensions', 'themify_img_resize_dimensions', 10, 5);
}
// Patch meta because if we're here, there's a valid attachment ID for sure, but maybe the meta data is not ok.
if (!is_array($meta) && empty($meta)) {
$meta['sizes'] = array('large' => array());
}
// Generate image returning an array with image url, width and height. If image can't generated, original url, width and height are used.
$image = themify_make_image_size($attachment_id, $width, $height, $meta, $img_url);
if (true == $crop) {
remove_filter('image_resize_dimensions', 'themify_img_resize_dimensions', 10);
}
$image['attachment_id'] = $attachment_id;
return $image;
}
