php echo form inside div "wp" - php

Question

I'm having a problem with my php code, when I try to echo a form inside a php I see it outside of div.
<?php
if ( is_user_logged_in() ) {
echo '<div class="loginformheader" style="margin-top: 0;">
<div id="reg-login">خروج</div></div>';
} else {
echo '<div class="loginformheader">'.header_login_form().'<div id="reg-login">تسجيل<span>|</span><a style="cursor: pointer;" id="logina">دخول</a><i class="fa fa-angle-up"></i></div></div>';
}
?>
The output
<p class="login-username">
<label for="user_login"></label>
<input type="text" name="log" id="user_login" class="input" value="" size="20" placeholder="اسم المستخدم">
</p>
<p class="login-password">
<label for="user_pass"></label>
<input type="password" name="pwd" id="user_pass" class="input" value="" size="20" placeholder="كلمة المرور">
</p>
<p class="login-remember"><label><input name="rememberme" type="checkbox" id="rememberme" value="forever"> تذكرني</label></p>
<p class="login-submit">
<input type="submit" name="wp-submit" id="wp-submit" class="button-primary" value="تسجيل الدخول">
<input type="hidden" name="redirect_to" value="http://localhost:8080/wordpress/2014/10/30/links-post-2/">
</p>
</form><div class="loginformheader"><div id="reg-login">تسجيل<span>|</span><a style="cursor: pointer;" id="logina">دخول</a><i class="fa fa-angle-up"></i></div></div> <hgroup class="site-branding">
<img class="site-logo" src="http://localhost:8080/wordpress/wp-content/themes/merwaa/img/logo.svg">
Maybe my English not very good, sorry me for that.
Can you help me?

Answer 1

Have a look at your header_login_form() function. It almost certainly echos the form, rather than returning it as a string. If that's the case, it'll be echoed when it's evaluated, which will be before the string it's in can be evaluated. Try this instead:
<?php
if ( is_user_logged_in() ) {
echo '<div class="loginformheader" style="margin-top: 0;">
<div id="reg-login">خروج</div></div>';
} else {
echo '<div class="loginformheader">';
header_login_form();
echo '<div id="reg-login">تسجيل<span>|</span><a style="cursor: pointer;" id="logina">دخول</a><i class="fa fa-angle-up"></i></div></div>';
}
?>