update code convention

Author: tungdt163

Helper/Config.php

@@ -99,15 +99,15 @@ public function buildUrl($inputUrl)
         $ciUrl = $baseUrl . $inputUrl . "?";
 
         if ($this->getImageQuality() < 100) {
-            if (!strpos($ciUrl, "?q=" . $this->getImageQuality())) {
+            if (strpos($ciUrl, "?q=" . $this->getImageQuality()) === false) {
                 $ciUrl .= "q=" . $this->getImageQuality();
             }
             $flagCheck = true;
         }
 
         if ($this->isOrgIfSml()) {
             $configParam = "org_if_sml=1";
-            if (!strpos($ciUrl, $configParam)) {
+            if (strpos($ciUrl, $configParam) === false) {
 
                 if (substr($ciUrl, -1) === $this->getImageQuality() . '?') {
                     $ciUrl = substr($ciUrl, 0, -1);

Helper/Images.php

@@ -108,12 +108,12 @@ public function processHtml($html)
                         $imageSrc = $element->getAttribute('src') . $quality;
 
                         if (!empty($this->config->getCName())) {
-                            if (!stripos($imageSrc, $this->config->getCName())) {
+                            if (stripos($imageSrc, $this->config->getCName()) === false) {
                                 $ciSrc = $this->config->buildUrl($imageSrc);
                                 $element->setAttribute('src', $ciSrc);
                             }
                         } else {
-                            if (!stripos($imageSrc, $this->config->getToken())) {
+                            if (stripos($imageSrc, $this->config->getToken()) === false) {
                                 $ciSrc = $this->config->buildUrl($imageSrc);
                                 $element->setAttribute('src', $ciSrc);
                             }