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<?php |
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namespace Averta\WordPress\Utility; |
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|
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class Extract |
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{ |
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/** |
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* Extract all images from content |
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* |
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* @param string $text The text to extract images from. |
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* |
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* @return bool|array List of images in array |
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*/ |
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public static function imagesFromText( $text ) |
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{ |
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preg_match_all( '|<img.*?src=[\'"](.*?)[\'"].*?>|i', $text, $matches ); |
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return isset( $matches ) && count( $matches[0] ) ? $matches : false; |
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} |
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|
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/** |
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* Get first image src from content |
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* |
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* @param string $text The content to extract image from. |
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* |
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* @return string First image URL on success and empty string if nothing found |
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*/ |
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public static function firstImageSrcFromText( $text ) |
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{ |
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$images = self::imagesFromText( $text ); |
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|
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return ( $images && count( $images[1]) ) ? $images[1][0] : ''; |
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} |
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|
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/** |
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* Get first image tag from string |
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* |
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* @param string $text The text to extract image from. |
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* |
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* @return string First image tag on success and empty string if nothing found |
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*/ |
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public static function firstImageFromText( $text ) |
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{ |
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$images = self::imagesFromText( $text ); |
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|
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return ( $images && count( $images[0]) ) ? $images[0][0] : ''; |
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} |
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|
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|
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/** |
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* Crawls the content and checks if the shortcode is present in the content or not |
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* - If list of $attributes was passed, it tries to extract and collect the value of attributes |
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* - and returns an array containing the values |
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* |
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* @param string $content Content to search for shortcodes. |
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* @param string $shortcodeName Shortcode tag name to check. |
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* @param array $attributes List of shortcode attribute which should be extracted |
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* |
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* @return array|bool False if shortcode does not exist in the content. |
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* An array containing attribute values if $attributes is not empty and shortcode exists in the content |
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* True if shortcode exits in the content |
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*/ |
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public static function shortcodeAttributes( $content, $shortcodeName, $attributes = [] ){ |
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$hasShortcode = false; |
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|
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if ( false === strpos( $content, '[' ) ) { |
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return false; |
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} |
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preg_match_all( '/' . get_shortcode_regex( [ $shortcodeName ] ) . '/', $content, $matches, PREG_SET_ORDER ); |
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|
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if ( empty( $matches ) ) { |
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return false; |
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} |
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|
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$extractedAttributes = []; |
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|
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foreach ( $matches as $shortcode ) { |
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// if shortcode found in the content |
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if ( $shortcodeName === $shortcode[2] ) { |
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$hasShortcode = $hasShortcode || 1; |
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|
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if( empty( $attributes ) && $hasShortcode ){ |
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return true; |
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} |
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|
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if( empty( $shortcode[3] ) ){ |
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continue; |
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} |
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|
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if( is_array( $attributes ) ){ |
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foreach( $attributes as $attributeName ){ |
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preg_match( '/'. $attributeName .'=["|\']([^\"\']+)["|\']/m', $shortcode[3], $attrMatches, PREG_OFFSET_CAPTURE, 0); |
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if( !empty( $attrMatches[1][0] ) ){ |
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$extractedAttributes[ $attributeName ][] = $attrMatches[1][0]; |
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} |
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} |
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} |
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} |
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} |
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|
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if( !empty( $extractedAttributes ) ){ |
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return $extractedAttributes; |
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} |
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|
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return $hasShortcode; |
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} |
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} |
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