我使用一个自定义库函数来更改普通的Wordpress标记。通常这很好，但我不太清楚如何在缩略图链接上添加图像标题作为标题属性。（我使用的lightbox将title属性转换为标题。）
以下是过滤器中的相关代码：
foreach ( $attachments as $id => $attachment ) {
$link = isset($attr[\'link\']) && \'file\' == $attr[\'link\'] ? wp_get_attachment_link($id, $size, false, false) : wp_get_attachment_link($id, $size, true, false);
$link = str_replace(\'><img\',\'title="test caption" ><img\',$link);
$output .= "<{$itemtag} class=\'item\'>";
$output .= "
$link
";
if ( $captiontag && trim($attachment->post_content) ) {
$output .= "
<{$captiontag}>
" . wptexturize($attachment->post_content) . "
</{$captiontag}>";
}
$output .= "</{$itemtag}>";
if ( $columns > 0 && ++$i % $columns == 0 )
$output .= \'\';
}
$output .= "
<br>\\n";
return $output;
}
那一秒
$link 符合
str_replace 是我所能做到的。我想也许我可以得到wp\\u get\\u attachment\\u link来输出一个title属性，当我找不到解决方案时，我使用str\\u replace，但我不知道如何获得当前单词“test caption”所在的图像标题。
SO网友:somepaulo
我在WordPress论坛上找到了一个有效的解决方案。代码如下：
function add_img_title_to_anchor($content) {
/* Find internal links */
//Check the page for linked images
$search = \'/<a ([^>]*?)><img ([^>]*?)\\/><\\/a>/i\';
preg_match_all( $search, $content, $matches, PREG_SET_ORDER);
//Check which attachment is referenced
foreach ($matches as $val) {
// Only if the Link doesn\'t already have a Title attribute, we work
if (!preg_match("#title=#", $val[1])) {
// Find all Link attributes and sanitize the Href att
$anchor_temp = preg_match_all("#([a-z-]+?)=([\'\\"]{1})([^\'\\"]*)([\'\\"]{1})#", $val[1], $matches_anchor);
foreach ($matches_anchor[1] as $key => $value) {
$anchor_atts[$value] = $matches_anchor[3][$key];
}
// Find all Image attributes
$img_temp = preg_match_all("#([a-z-]+?)=([\\"]{1})([^\\"]*)([\\"]{1})#", $val[2], $matches_img);
foreach ($matches_img[1] as $key => $value) {
$img_atts[$value] = $matches_img[3][$key];
}
// Get the Image Title attribute and copy it to the Link attributes
// Case 1. If Image Title exists we use it
if (isset($img_atts["title"]) && $img_atts["title"] != "") {
$anchor_atts["title"] = $img_atts["title"];
}
// Case 2. If no we use the Alt attribute
else {
$anchor_atts["title"] = $img_atts["alt"];
}
// Rebuilt the HTML tags
$anchor_attributes = array();
foreach ($anchor_atts as $key => $value) {
$anchor_attributes[] = $key . \'="\' . $value . \'"\';
}
$img_attributes = array();
foreach ($img_atts as $key => $value) {
$img_attributes[] = $key . \'="\' . $value . \'"\';
}
// Replace the previous tags by the new
$replacement = \'<a \' . implode(" ", $anchor_attributes) . \'><img \' . implode(" ", $img_attributes) . \' /></a>\';
$content = str_replace($val[0], $replacement, $content);
}
}
return $content;
原文如下：
https://wordpress.org/support/topic/add-the-title-of-an-image-to-the-image-link-in-gallery
