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<?php |
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/** |
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* Helper functions |
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* |
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* @package PrintCenter\Functions |
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* @since 1.0.0 |
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*/ |
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// Exit if accessed directly |
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if( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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/** |
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* Fetch an array of available shirt types |
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* |
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* @since 1.0.0 |
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* @return array $shirts The available shirt types |
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*/ |
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function printcenter_get_shirts() { |
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$shirts = array(); |
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$posts = get_posts( array( |
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'posts_per_page' => 999999, |
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'post_type' => 'ssi_product', |
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'post_status' => 'publish' |
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) ); |
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if( count( $posts ) > 0 ) { |
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foreach( $posts as $post ) { |
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$sku = get_post_meta( $post->ID, '_ssi_sku', true ); |
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$shirts[$sku] = $post->post_title; |
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} |
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} |
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return $shirts; |
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} |
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/** |
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* Prettifies an XML string |
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* |
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* @since 1.0.0 |
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* @param string $xml The XML as a string |
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* @param boolean $html_output True if the output should be escaped (for use in HTML) |
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* @return string The prettified XML |
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*/ |
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function printcenter_prettify_xml( $xml, $html_output = false ) { |
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$xml_obj = new SimpleXMLElement($xml); |
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$level = 4; |
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$indent = 0; // current indentation level |
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$pretty = array(); |
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// Get an array containing each XML element |
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$xml = explode( "\n", preg_replace( '/>\s*</', ">\n<", $xml_obj->asXML() ) ); |
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// Shift off opening XML tag if present |
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if( count( $xml ) && preg_match( '/^<\?\s*xml/', $xml[0] ) ) { |
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$pretty[] = array_shift($xml); |
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} |
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foreach( $xml as $el ) { |
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if( preg_match( '/^<([\w])+[^>\/]*>$/U', $el ) ) { |
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// opening tag, increase indent |
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$pretty[] = str_repeat( ' ', $indent ) . $el; |
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$indent += $level; |
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} else { |
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if( preg_match( '/^<\/.+>$/', $el ) ) { |
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$indent -= $level; // closing tag, decrease indent |
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} |
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if( $indent < 0 ) { |
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$indent += $level; |
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} |
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$pretty[] = str_repeat( ' ', $indent ) . $el; |
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} |
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} |
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$xml = implode( "\n", $pretty ); |
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return ( $html_output ) ? htmlentities( $xml ) : $xml; |
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} |
Section214 /
PrintCenter
The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file.
The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place.
To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1.