init

wp-content/plugins/mailpoet/lib/Util/Helpers.php

@@ -0,0 +1,147 @@
+<?php // phpcs:ignore SlevomatCodingStandard.TypeHints.DeclareStrictTypes.DeclareStrictTypesMissing
+
+namespace MailPoet\Util;
+
+if (!defined('ABSPATH')) exit;
+
+
+class Helpers {
+  const DIVIDER = '***MailPoet***';
+  const LINK_TAG = 'link';
+
+  public static function isJson($string) {
+    if (!is_string($string)) return false;
+    json_decode($string);
+    return json_last_error() == JSON_ERROR_NONE;
+  }
+
+  public static function replaceLinkTags(
+    string $source,
+    string $link,
+    array $attributes = [],
+    string $linkTag = self::LINK_TAG
+  ) {
+    if (empty($link)) return $source;
+
+    $attributes = array_map(function($key) use ($attributes) {
+      return sprintf('%s="%s"', $key, $attributes[$key]);
+    }, array_keys($attributes));
+    $source = str_replace(
+      '[' . $linkTag . ']',
+      sprintf(
+        '<a %s href="%s">',
+        join(' ', $attributes),
+        $link
+      ),
+      $source
+    );
+    $source = str_replace('[/' . $linkTag . ']', '</a>', $source);
+    return preg_replace('/\s+/', ' ', $source);
+  }
+
+  public static function getMaxPostSize($bytes = false) {
+    $maxPostSize = ini_get('post_max_size');
+    if (!$bytes) return $maxPostSize;
+    if ($maxPostSize === false) {
+      return 0;
+    }
+    switch (substr($maxPostSize, -1)) {
+      case 'M':
+      case 'm':
+        return (int)$maxPostSize * 1048576;
+      case 'K':
+      case 'k':
+        return (int)$maxPostSize * 1024;
+      case 'G':
+      case 'g':
+        return (int)$maxPostSize * 1073741824;
+      default:
+        return $maxPostSize;
+    }
+  }
+
+  public static function flattenArray($array) {
+    if (!$array) return;
+    $flattenedArray = [];
+    array_walk_recursive($array, function ($a) use (&$flattenedArray) {
+      $flattenedArray[] = $a;
+    });
+    return $flattenedArray;
+  }
+
+  public static function underscoreToCamelCase($str, $capitaliseFirstChar = false) {
+    if ($capitaliseFirstChar) {
+      $str[0] = strtoupper($str[0]);
+    }
+    return preg_replace_callback('/_([a-z])/', function ($c) {
+      return strtoupper($c[1]);
+    }, $str);
+  }
+
+  public static function camelCaseToUnderscore($str) {
+    $str[0] = strtolower($str[0]);
+    return preg_replace_callback('/([A-Z])/', function ($c) {
+      return "_" . strtolower($c[1]);
+    }, $str);
+  }
+
+  public static function camelCaseToKebabCase($str) {
+    $str[0] = strtolower($str[0]);
+    return preg_replace_callback('/([A-Z])/', function ($c) {
+      return "-" . strtolower($c[1]);
+    }, $str);
+  }
+
+  public static function joinObject($object = []) {
+    return implode(self::DIVIDER, $object);
+  }
+
+  public static function splitObject($object = []) {
+    return explode(self::DIVIDER, $object);
+  }
+
+  public static function getIP() {
+    return (isset($_SERVER['REMOTE_ADDR']))
+      ? sanitize_text_field(wp_unslash($_SERVER['REMOTE_ADDR']))
+      : null;
+  }
+
+  public static function recursiveTrim($value) {
+    if (is_array($value))
+      return array_map([__CLASS__, 'recursiveTrim'], $value);
+    if (is_string($value))
+      return trim($value);
+    return $value;
+  }
+
+  public static function escapeSearch(string $search): string {
+    return str_replace(['\\', '%', '_'], ['\\\\', '\\%', '\\_'], trim($search)); // escape for 'LIKE'
+  }
+
+  public static function extractEmailDomain(string $email = ''): string {
+    $arrayOfItems = explode('@', trim($email));
+    return strtolower(array_pop($arrayOfItems));
+  }
+
+  public static function mySqlGoneAwayExceptionHandler(\Throwable $err): string {
+    $errorMessage = $err->getMessage() ? $err->getMessage() : '';
+    $mySqlGoneAwayCheck = strpos(strtolower($errorMessage), 'mysql server has gone away') !== false;
+
+    if ($mySqlGoneAwayCheck) {
+      $customErrorMessage = sprintf(
+        // translators: the %1$s is the link, the %2$s is the error message.
+        __('Please see %1$s for more information. %2$s.', 'mailpoet'),
+        'https://kb.mailpoet.com/article/307-how-to-fix-general-error-2006-mysql-server-has-gone-away',
+        $errorMessage
+      );
+      // logging to the php log
+      if (function_exists('error_log')) {
+        error_log($customErrorMessage); // phpcs:ignore Squiz.PHP.DiscouragedFunctions
+      }
+
+      return $customErrorMessage;
+    }
+
+    return '';
+  }
+}