You can not use a case statement inside a case. Try this corrected code
switch ( $type ) {
case 'heading':
echo '</td></tr><tr valign="top"><td colspan="2"><h4>' . $desc . '</h4>';
break;
case 'checkbox':
echo '<input class="checkbox' . $field_class . '" type="checkbox" id="' . $id . '" name="' . $shortname_options . '[' . $id . ']' . '" value="1" ' . checked( $options[$id], 1, false ) . ' /> <label for="' . $id . '">' . $desc . '</label>';
break;
case 'select':
echo '<select class="select' . $field_class . '" name="' . $shortname_options . '[' . $id . ']' . '">';
foreach ( $choices as $value => $label )
echo '<option value="' . esc_attr( $value ) . '"' . selected( $options[$id], $value, false ) . '>' . $label . '</option>';
echo '</select>';
if ( $desc != '' )
echo '<br /><span class="description">' . $desc . '</span>';
break;
case 'radio':
$i = 0;
foreach ( $choices as $value => $label ) {
echo '<input class="radio' . $field_class . '" type="radio" name="' . $shortname_options . '[' . $id . ']' . '" id="' . $id . $i . '" value="' . esc_attr( $value ) . '" ' . checked( $options[$id], $value, false ) . '> <label for="' . $id . $i . '">' . $label . '</label>';
if ( $i < count( $options ) - 1 )
echo '<br />';
$i++;
}
if ( $desc != '' )
echo '<br /><span class="description">' . $desc . '</span>';
break;
case 'textarea':
echo '<textarea class="' . $field_class . '" id="' . $id . '" name="' . $shortname_options . '[' . $id . ']' . '" placeholder="' . $std . '" rows="5" cols="30">' . wp_htmledit_pre( $options[$id] ) . '</textarea>';
if ( $desc != '' )
echo '<br /><span class="description">' . $desc . '</span>';
break;
case 'password':
echo '<input class="regular-text' . $field_class . '" type="password" id="' . $id . '" name="' . $shortname_options . '[' . $id . ']' . '" value="' . esc_attr( $options[$id] ) . '" />';
if ( $desc != '' )
echo '<br /><span class="description">' . $desc . '</span>';
break;
case 'text':
echo '<input class="regular-text' . $field_class . '" type="text" id="' . $id . '" name="' . $shortname_options . '[' . $id . ']' . '" placeholder="' . $std . '" value="' . esc_attr( $options[$id] ) . '" />';
if ( $desc != '' )
echo '<br /><span class="description">' . $desc . '</span>';
break;
case 'html':
echo $std;
if ( $desc != '' )
echo '<br /><span class="description">' . $desc . '</span>';
break;
default:
echo '<input id="' . $id . '" class="upload-url' . $field_class . '" type="text" name="' . $shortname_options . '[' . $id . ']' . '" value="' . esc_attr( $options[$id] ) . '" /><input id="st_upload_button" class="st_upload_button" type="button" name="upload_button" value="Upload" />';
if ( $desc != '' )
echo '
<span class="description">' . $desc . '</span>';
echo '<div class="upload-img-preview">';
if (esc_attr( $options[$id] <> '')) {
echo '<img class="upload-img-preview" src="https://stackoverflow.com/questions/44000568/.esc_attr( $options[$id])." />';
echo '<a class="removeupload">'. __('Delete Image', 'icore') .'</a>';
}
echo '</div>';
break;
case 'slide':
if ( $desc != '' )
echo '<span class="description' . $field_class . '">' . $desc . '</span>';
echo '<br /><span id="slides-details-button"></span>';
echo '<ul id="slideshow_list">';
if ( $options['slider'] <> '' ) {
$slides = array();
foreach ($options[$id]['title'] as $k => $v) {
$slides[] = array(
'title' => $v,
'link' => $options[$id]['link'][$k],
'caption' => $options[$id]['caption'][$k],
'image' => $options[$id]['image'][$k]
);
}
$i = 1;
foreach ($slides as $slide) {
echo '<li class="slide">';
echo '<a class="editslideimage">edit</a>';
echo '<div class="image-details slidedetails">';
echo '<span class="description">' . __( 'Slide Title', 'icore' ) . '</span>';
echo '<input class="regular-text' . $field_class . '" name="' . $shortname_options . '[' . $id . ']Fatal error: Switch statements may only contain one default clause (php7)[]" placeholder="' . $std . '" id="'. $id .'_title_'.$i.'" value="'.$slide['title'].'" type="text" />';
echo '<span class="description">' . __( 'Slide Link', 'icore' ) . '</span>';
echo '<input class="regular-text' . $field_class . '" name="' . $shortname_options . '[' . $id . ']https://stackoverflow.com/questions/44000568/fatal-error-switch-statements-may-only-contain-one-default-clause-php7[]" placeholder="' . $std . '" id="'. $id .'_title_'.$i.'" value="'.$slide['link'].'" type="text" />';
echo '<span class="description">' . __( 'Slide Caption', 'icore' ) . '</span>';
echo '<textarea class="'.$field_class.'" name="' . $shortname_options . '[' . $id . '][]" id="'. $id .'_caption_'.$i.'" cols="40" rows="4">'.$slide['caption'].'</textarea>';
echo '<span class="description">' . __( 'Slide Image', 'icore' ) . '</span>';
echo '<input class="upload-input-text src" name="' . $shortname_options . '[' . $id . '][image][]" id="'. $id .'_image_'.$i.'" type="text" value="'.$slide['image'].'" type="text" />
<a href="'.get_option('siteurl').'/wp-admin/admin-ajax.php?action=choice&width=150&height=100" id="'.$id.'_button" class="button upbutton">' . __( 'Upload','InterStellar' ) . '</a>';
echo '<a class="doneslideimage">Done</a>';
echo '</div>';
echo '<div class="clear"></div><div class="upload-img-preview">';
if ( $slide['image'] != "" )
{
echo '<img class="upload-img-preview" id="image_'. $id .'_image_'.$i.'" src="'.$slide['image'].'" />';
}
echo '</div>';
echo '<a class="remove_slide submitdelete">' . __( 'Delete Slide', 'InterStellar' ) . '</a>';
echo '</li>';
$i++;
}
} else {
$i = 1;
echo '<li class="slide">';
echo '<span class="description">' . __( 'Slide Title', 'icore' ) . '</span>';
echo '<input class="regular-text' . $field_class . '" name="' . $shortname_options . '[' . $id . ']Fatal error: Switch statements may only contain one default clause (php7)[]" placeholder="' . $std . '" id="'. $id .'_title_'.$i.'" value="" type="text" />';
echo '<span class="description">' . __( 'Slide Link', 'icore' ) . '</span>';
echo '<input class="regular-text' . $field_class . '" name="' . $shortname_options . '[' . $id . ']https://stackoverflow.com/questions/44000568/fatal-error-switch-statements-may-only-contain-one-default-clause-php7[]" placeholder="' . $std . '" id="'. $id .'_title_'.$i.'" value="" type="text" />';
echo '<span class="description">' . __( 'Slide Caption', 'icore' ) . '</span>';
echo '<textarea class="'.$field_class.'" name="' . $shortname_options . '[' . $id . '][]" id="'. $id .'_caption_'.$i.'" cols="40" rows="4"></textarea>';
echo '<span class="description">' . __( 'Slide Image', 'icore' ) . '</span>';
echo '<input class="upload-input-text src" name="' . $shortname_options . '[' . $id . '][image][]" id="'. $id .'_image_'.$i.'" type="text" value="" type="text" />
<a href="'.get_option('siteurl').'/wp-admin/admin-ajax.php?action=choice&width=150&height=100" id="'.$id.'_button" class="button upbutton">' . __( 'Upload', 'icore' ) . '</a>';
echo '<div class="clear"></div><div class="upload-img-preview">';
echo '</div>';
echo '<a class="remove_slide submitdelete">' . __( 'Delete Slide','InterStellar' ) . '</a>';
echo '</li>';
}
echo '</ul>';
break;
}
}