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<?php |
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namespace Flynt\Features\GoogleAnalytics; |
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class GoogleAnalytics |
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{ |
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public function __construct($options) |
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{ |
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$this->gaId = $options['gaId']; |
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$this->anonymizeIp = $options['anonymizeIp']; |
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$this->skippedUserRoles = $options['skippedUserRoles']; |
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$this->skippedIps = $options['skippedIps']; |
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if ($this->skippedIps) { |
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$skippedIps = explode(',', $this->skippedIps); |
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$this->skippedIps = array_map('trim', $skippedIps); |
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} |
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if ($this->gaId && $this->isValidId($this->gaId)) { |
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add_action('wp_footer', [$this, 'addScript'], 20, 1); |
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} else if ($this->gaId != 1 && !isset($_POST['acf'])) { |
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trigger_error('Invalid Google Analytics Id: ' . $this->gaId, E_USER_WARNING); |
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} |
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} |
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public function addScript() |
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{ |
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?> |
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<script> |
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<?php |
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$user = wp_get_current_user(); |
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$debugMode = $this->gaId === 'debug'; |
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$isSkippedUser = $this->skippedUserRoles && array_intersect($this->skippedUserRoles, $user->roles); |
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$isSkippedIp = is_array($this->skippedIps) && in_array($_SERVER['REMOTE_ADDR'], $this->skippedIps); |
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if ($debugMode || $isSkippedUser || $isSkippedIp) : ?> |
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function ga() { |
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console.log('GoogleAnalytics: ' + [].slice.call(arguments)); |
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} |
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<?php |
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else : ?> |
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(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ |
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(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), |
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m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) |
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})(window,document,'script','https://www.google-analytics.com/analytics.js','ga'); |
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<?php |
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endif; ?> |
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ga('create','<?php echo $this->gaId; ?>','auto');ga('send','pageview'); |
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<?php if ($this->anonymizeIp == 1) : ?> |
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ga('set', 'anonymizeIp', true); |
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<?php endif; ?> |
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</script> |
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<?php |
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} |
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private function isValidId($gaId) |
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{ |
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if ($gaId === 'debug') { |
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return true; |
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} else { |
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return preg_match('/^ua-\d{4,10}-\d{1,4}$/i', (string) $gaId); |
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} |
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} |
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} |
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: