Problem upgrading from Php5.5 to Php7

These codes are codes that come after the customizer import-export for the child theme, I did not add.

If you’re finished with setting up the Customizer you can delete the code and deactivate the plugin.

but there is a problem with the image.

Which image do you mean? The header image or the logo? Both looks fine on my browser.

The next code

You don’t need so many PHP-tags inside of your functions.php. If you have the PHP-opening tag <?php once at the beginning of your file it’s enough. You don’t need to close it.

Simple Custom CSS and JS,

It did not work
https://prntscr.com/jdfy01

This code has to be added into the functions.php of your child theme, because this is PHP code. Remove it from your my-custom-js.js file

/**
 * Enqueue custom functions script
 */
function meteorite_child_custom_functions() {
	wp_enqueue_script( 'meteorite-child-custom-js', get_stylesheet_directory_uri() . '/js/my-custom-functions.js', array('jquery'), '', true );
}
add_action( 'wp_enqueue_scripts', 'meteorite_child_custom_functions' );

functions.php file
Additional import-export codes.

I deleted the codes, you can look again.

https://prnt.sc/jdnwlx

these codes,
https://prntscr.com/jdob0i

Please tell me what you need to know now. Which code works and which does not?

It works in 2 cases, but when I delete the codes, a line appears on the screen (?>).

Then deactivate the plugin and then delete it.

2 plugin is disabled. When I add it to functions.php file it does not work.

<?php
function meteorite_child_custom_functions() {
	wp_enqueue_script( 'meteorite-child-custom-js', get_stylesheet_directory_uri() . '/js/my-custom-functions.js', array('jquery'), '', true );
}
add_action( 'wp_enqueue_scripts', 'meteorite_child_custom_functions' );

add_action( 'wp_enqueue_scripts', 'my_theme_enqueue_styles' );
function my_theme_enqueue_styles() {
    wp_enqueue_style( 'parent-style', get_template_directory_uri() . '/style.css' );
 
}

/**
 * Site branding
 */
if ( ! function_exists('meteorite_sitebranding') ):
function meteorite_sitebranding() {
	$logo_light = get_theme_mod( 'logo_light', '' );
	$has_custom_logo = has_custom_logo();
	
	if ( $has_custom_logo || $logo_light) {
		if ( function_exists( 'the_custom_logo' ) && has_custom_logo() ) {
			the_custom_logo();
		}
		if ( $logo_light ) {
			echo '<a href="' . esc_url( home_url( '/' ) ) . '" title="' . esc_attr(get_bloginfo('name')) . '"><img class="site-logo light" src="' . esc_url($logo_light) . '" alt="' . esc_attr(get_bloginfo('name')) . '" /></a>'; 
		}
	} else {
		echo '<div class="site-brand">';
		if ( is_front_page() && is_home() ) :
			echo '<h1 class="site-title"><a href="' . esc_url( home_url( '/' ) ) . '" rel="home">' . get_bloginfo('name', 'display') . '</a></h1>';
		else :
			echo '<p class="site-title"><a href="' . esc_url( home_url( '/' ) ) . '" rel="home">' . get_bloginfo('name', 'display') . '</a></p>';
		endif;
		echo '<p class="site-description">' . get_bloginfo('description', 'display') . '</p>';
		echo '</div>'; // /.site-brand
	}
	echo '<p class="custom-logo-text">|  Tasar?m ? Tan?t?m</p>';
}
endif;

? Yes I think the wrong erase is no problem now the image is improved.

I don’t know what you did but your website doesn’t load correctly anymore. Please undo your last changes if you can or remove some of your code functions from the functions.php

I know, I left it for you to see. The code I added to the Functions.php file caused it.

function meteorite_child_custom_functions() {
	wp_enqueue_script( 'meteorite-child-custom-js', get_stylesheet_directory_uri() . '/js/my-custom-functions.js', array('jquery'), '', true );
}
add_action( 'wp_enqueue_scripts', 'meteorite_child_custom_functions' );

I got the codes back and the site is fine.

View problematic functions.ph file.
https://prntscr.com/jdtxf7

Please remove all the code from the functions.php of your child theme and use this:

<?php

function my_theme_enqueue_styles() {
    wp_enqueue_style( 'parent-style', get_template_directory_uri() . '/style.css' );
 
}
add_action( 'wp_enqueue_scripts', 'my_theme_enqueue_styles' );

function meteorite_child_custom_functions() {
	wp_enqueue_script( 'meteorite-child-custom-js', get_stylesheet_directory_uri() . '/js/my-custom-functions.js', array('jquery'), '', true );
}
add_action( 'wp_enqueue_scripts', 'meteorite_child_custom_functions' );

/**
 * Site branding
 */
if ( ! function_exists('meteorite_sitebranding') ):
function meteorite_sitebranding() {
	$logo_light = get_theme_mod( 'logo_light', '' );
	$has_custom_logo = has_custom_logo();
	
	if ( $has_custom_logo || $logo_light) {
		if ( function_exists( 'the_custom_logo' ) && has_custom_logo() ) {
			the_custom_logo();
		}
		if ( $logo_light ) {
			echo '<a href="' . esc_url( home_url( '/' ) ) . '" title="' . esc_attr(get_bloginfo('name')) . '"><img class="site-logo light" src="' . esc_url($logo_light) . '" alt="' . esc_attr(get_bloginfo('name')) . '" /></a>'; 
		}
	} else {
		echo '<div class="site-brand">';
		if ( is_front_page() && is_home() ) :
			echo '<h1 class="site-title"><a href="' . esc_url( home_url( '/' ) ) . '" rel="home">' . get_bloginfo('name', 'display') . '</a></h1>';
		else :
			echo '<p class="site-title"><a href="' . esc_url( home_url( '/' ) ) . '" rel="home">' . get_bloginfo('name', 'display') . '</a></p>';
		endif;
		echo '<p class="site-description">' . get_bloginfo('description', 'display') . '</p>';
		echo '</div>'; // /.site-brand
	}
	echo '<p class="custom-logo-text">|  Tasar?m ? Tan?t?m</p>';
}
endif;

I tested this on my test website and it worked. Please try to clear the cache of your caching plugin.

I changed the code, I did the cache refresh. The codes did not work.

Please deactivate all of your caching plugins.

W3 Total Cache?

I don’t know which plugins you installed, but yes, this could be the one.