[CLEANUP] Avoid Hungarian notation for iKey (#855)

Part of #756

Author: oliverklee

src/CSSList/CSSList.php

@@ -315,9 +315,9 @@ public function insertBefore($item, $sibling): void
      */
     public function remove($itemToRemove)
     {
-        $iKey = \array_search($itemToRemove, $this->contents, true);
-        if ($iKey !== false) {
-            unset($this->contents[$iKey]);
+        $key = \array_search($itemToRemove, $this->contents, true);
+        if ($key !== false) {
+            unset($this->contents[$key]);
             return true;
         }
         return false;
@@ -334,12 +334,12 @@ public function remove($itemToRemove)
      */
     public function replace($oldItem, $newItem)
     {
-        $iKey = \array_search($oldItem, $this->contents, true);
-        if ($iKey !== false) {
+        $key = \array_search($oldItem, $this->contents, true);
+        if ($key !== false) {
             if (\is_array($newItem)) {
-                \array_splice($this->contents, $iKey, 1, $newItem);
+                \array_splice($this->contents, $key, 1, $newItem);
             } else {
-                \array_splice($this->contents, $iKey, 1, [$newItem]);
+                \array_splice($this->contents, $key, 1, [$newItem]);
             }
             return true;
         }
@@ -371,7 +371,7 @@ public function removeDeclarationBlockBySelector($mSelector, $bRemoveAll = false
         if (!\is_array($mSelector)) {
             $mSelector = \explode(',', $mSelector);
         }
-        foreach ($mSelector as $iKey => &$mSel) {
+        foreach ($mSelector as $key => &$mSel) {
             if (!($mSel instanceof Selector)) {
                 if (!Selector::isValid($mSel)) {
                     throw new UnexpectedTokenException(
@@ -383,12 +383,12 @@ public function removeDeclarationBlockBySelector($mSelector, $bRemoveAll = false
                 $mSel = new Selector($mSel);
             }
         }
-        foreach ($this->contents as $iKey => $item) {
+        foreach ($this->contents as $key => $item) {
             if (!($item instanceof DeclarationBlock)) {
                 continue;
             }
             if ($item->getSelectors() == $mSelector) {
-                unset($this->contents[$iKey]);
+                unset($this->contents[$key]);
                 if (!$bRemoveAll) {
                     return;
                 }

src/RuleSet/DeclarationBlock.php

@@ -96,7 +96,7 @@ public function setSelectors($mSelector, $oList = null): void
         } else {
             $this->aSelectors = \explode(',', $mSelector);
         }
-        foreach ($this->aSelectors as $iKey => $mSelector) {
+        foreach ($this->aSelectors as $key => $mSelector) {
             if (!($mSelector instanceof Selector)) {
                 if ($oList === null || !($oList instanceof KeyFrame)) {
                     if (!Selector::isValid($mSelector)) {
@@ -106,7 +106,7 @@ public function setSelectors($mSelector, $oList = null): void
                             'custom'
                         );
                     }
-                    $this->aSelectors[$iKey] = new Selector($mSelector);
+                    $this->aSelectors[$key] = new Selector($mSelector);
                 } else {
                     if (!KeyframeSelector::isValid($mSelector)) {
                         throw new UnexpectedTokenException(
@@ -115,7 +115,7 @@ public function setSelectors($mSelector, $oList = null): void
                             'custom'
                         );
                     }
-                    $this->aSelectors[$iKey] = new KeyframeSelector($mSelector);
+                    $this->aSelectors[$key] = new KeyframeSelector($mSelector);
                 }
             }
         }
@@ -131,9 +131,9 @@ public function removeSelector($mSelector): bool
         if ($mSelector instanceof Selector) {
             $mSelector = $mSelector->getSelector();
         }
-        foreach ($this->aSelectors as $iKey => $selector) {
+        foreach ($this->aSelectors as $key => $selector) {
             if ($selector->getSelector() === $mSelector) {
-                unset($this->aSelectors[$iKey]);
+                unset($this->aSelectors[$key]);
                 return true;
             }
         }

src/RuleSet/RuleSet.php

@@ -230,9 +230,9 @@ public function removeRule($mRule): void
             if (!isset($this->aRules[$sRule])) {
                 return;
             }
-            foreach ($this->aRules[$sRule] as $iKey => $rule) {
+            foreach ($this->aRules[$sRule] as $key => $rule) {
                 if ($rule === $mRule) {
-                    unset($this->aRules[$sRule][$iKey]);
+                    unset($this->aRules[$sRule][$key]);
                 }
             }
         } else {