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<?php |
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|
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/** |
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* Returns a formatted string of HTML attributes. |
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* |
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* @param array $atts Associative array of attribute name and value pairs. |
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* @return string Formatted HTML attributes. |
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*/ |
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function bogo_format_atts( $atts ) { |
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$atts_filtered = array(); |
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|
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foreach ( $atts as $name => $value ) { |
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$name = strtolower( trim( $name ) ); |
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|
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if ( ! preg_match( '/^[a-z_:][a-z_:.0-9-]*$/', $name ) ) { |
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continue; |
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} |
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|
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static $boolean_attributes = array( |
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'checked', 'disabled', 'multiple', 'readonly', 'required', 'selected', |
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); |
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|
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if ( in_array( $name, $boolean_attributes ) and '' === $value ) { |
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$value = false; |
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} |
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|
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if ( is_numeric( $value ) ) { |
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$value = (string) $value; |
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} |
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|
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if ( null === $value or false === $value ) { |
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unset( $atts_filtered[$name] ); |
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} elseif ( true === $value ) { |
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$atts_filtered[$name] = $name; // boolean attribute |
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} elseif ( is_string( $value ) ) { |
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$atts_filtered[$name] = trim( $value ); |
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} |
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} |
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|
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$output = ''; |
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|
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foreach ( $atts_filtered as $name => $value ) { |
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$output .= sprintf( ' %1$s="%2$s"', $name, esc_attr( $value ) ); |
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} |
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|
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return trim( $output ); |
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} |
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|
