Merge pull request #7658 from Automattic/fix/passing-array-to-strncmp

Fix lesson loading error issue in learning mode for themes that are using referenced styles

changelog/fix-passing-array-to-strncmp

@@ -0,0 +1,4 @@
+Significance: patch
+Type: fixed
+
+Prevent lesson loading error in learning mode for themes that are using referenced styles

includes/course-theme/class-sensei-course-theme-styles.php

@@ -48,7 +48,6 @@ public static function apply_block_support( $block_content, $block ) {
 
 		$style = esc_attr( implode( ' ', $colors ) );
 		return self::set_style_attribute( $block_content, $style );
-
 	}
 
 	/**
@@ -78,11 +77,9 @@ public static function output_global_styles_colors() {
 	 * @return array Name-value pairs of CSS variables
 	 */
 	private static function get_colors_as_css_variables( $styles ) {
-
 		if ( empty( $styles ) ) {
 			return [];
 		}
-
 	}
 
 	/**
@@ -139,7 +136,6 @@ private static function get_block_colors( $attributes ) {
 		$colors = self::get_colors( $styles );
 
 		return self::format_css_variables( $colors );
-
 	}
 
 	/**
@@ -155,7 +151,10 @@ private static function format_css_variables( $variables, $postfix = '' ) {
 			if ( $postfix ) {
 				$variable = $variable . $postfix;
 			}
-			if ( $value ) {
+			if (
+				$value &&
+				is_string( $value )
+			) {
 				$css[] = sprintf( '%s: %s;', $variable, self::get_property_value( $value ) );
 			}
 		}
@@ -190,7 +189,6 @@ private static function output_style( $css ) {
 	 * @return string Style property value.
 	 */
 	private static function get_property_value( $value ) {
-
 		$prefix     = 'var:';
 		$prefix_len = strlen( $prefix );
 		$token_in   = '|';