wordpress对输出的内容替换

function igeekLab_cdn_avatar($avatar) {
    $buffer = str_replace("http://1.gravatar.com/", "https://1.gravatar.com/", $avatar);
	return $avatar;
}
function igeeklab_avatar_start() {
	ob_start("igeeklab_cdn_avatar");
}
function igeeklab_avatar_end() {
	ob_end_flush();
}
add_action('init', 'igeeklab_avatar_start');
add_action('shutdown', 'igeeklab_avatar_end');

function igeekLab_cdn_avatar($avatar) {

$buffer = str_replace("http://1.gravatar.com/", "https://1.gravatar.com/", $avatar);

return $avatar;

}

function igeeklab_avatar_start() {

ob_start("igeeklab_cdn_avatar");

}

function igeeklab_avatar_end() {

ob_end_flush();

}

add_action('init', 'igeeklab_avatar_start');

add_action('shutdown', 'igeeklab_avatar_end');

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wordpress对输出的内容替换