wp_add_inline_style()中未定義的變數-有解無憂

我將網站更新為 PHP8，并在最后一行使用 wp_add_inline_style('theme-style', $customVariables); 收到警告“未定義變數 $customVariables”；代碼如下：

function spectra_custom_styles($custom) {
    //Fonts
    $headings_font = esc_html(get_theme_mod('spectra_headings_fonts'));
    $body_font = esc_html(get_theme_mod('spectra_body_fonts'));
    if ( $headings_font or $body_font) {
        $customVariables = ":root{"."\n";
        if ( $headings_font ) {
            $font_pieces = explode(":", $headings_font);
            $customVariables .= "--c7-heading-font-family: {$font_pieces[0]};"."\n";
        }
        if ( $body_font ) {
            $font_pieces = explode(":", $body_font);
            $customVariables .= "--c7-font-family: {$font_pieces[0]};"."\n";
        }
        
        $customVariables .= "}";
        
    }

    //Output all the styles
        wp_add_inline_style( 'theme-style', $customVariables );
}

uj5u.com熱心網友回復：

這是因為您只在塊$customVariables內定義。if在這種情況下，對變數的$headings_font or $body_font評估false將是Undefined.

你可以更新到這個：

function spectra_custom_styles($custom) {
    //Fonts
    $headings_font = esc_html(get_theme_mod('spectra_headings_fonts'));
    $body_font = esc_html(get_theme_mod('spectra_body_fonts'));
    $customVariables = "";

    if ( $headings_font or $body_font) {
        $customVariables .= ":root{"."\n";
        if ( $headings_font ) {
            $font_pieces = explode(":", $headings_font);
            $customVariables .= "--c7-heading-font-family: {$font_pieces[0]};"."\n";
        }
        if ( $body_font ) {
            $font_pieces = explode(":", $body_font);
            $customVariables .= "--c7-font-family: {$font_pieces[0]};"."\n";
        }
        
        $customVariables .= "}";
        
    }

    //Output all the styles
        wp_add_inline_style( 'theme-style', $customVariables );
}

或者您可以移動wp_add_inline_style到 if 塊內部：

function spectra_custom_styles($custom) {
    //Fonts
    $headings_font = esc_html(get_theme_mod('spectra_headings_fonts'));
    $body_font = esc_html(get_theme_mod('spectra_body_fonts'));


    if ( $headings_font or $body_font) {
        $customVariables = ":root{"."\n";
        if ( $headings_font ) {
            $font_pieces = explode(":", $headings_font);
            $customVariables .= "--c7-heading-font-family: {$font_pieces[0]};"."\n";
        }
        if ( $body_font ) {
            $font_pieces = explode(":", $body_font);
            $customVariables .= "--c7-font-family: {$font_pieces[0]};"."\n";
        }
        
        $customVariables .= "}";


    //Output all the styles
        wp_add_inline_style( 'theme-style', $customVariables );
        
    }

}

轉載請註明出處，本文鏈接：https://www.uj5u.com/net/466201.html

標籤：WordPress 定制 php-8 内联样式未定义的变量

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