count() optimization with !empty() check instead when possible

benchmark/ArrayUtilsBench.php

@@ -0,0 +1,44 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace ZendBench\Stdlib;
+
+use PhpBench\Benchmark\Metadata\Annotations\Iterations;
+use PhpBench\Benchmark\Metadata\Annotations\Revs;
+use PhpBench\Benchmark\Metadata\Annotations\Warmup;
+use Zend\Stdlib\ArrayUtils;
+
+/**
+ * @Revs(1000)
+ * @Iterations(10)
+ * @Warmup(2)
+ */
+class ArrayUtilsBench
+{
+    public function benchHasStringKeys()
+    {
+        ArrayUtils::hasStringKeys([
+            'key' => 'value',
+        ]);
+    }
+
+    public function benchHasIntegerKeys()
+    {
+        ArrayUtils::hasIntegerKeys([
+            1 => 'value',
+        ]);
+    }
+
+    public function benchHasNumericKeys()
+    {
+        ArrayUtils::hasNumericKeys([
+            '1' => 'value',
+        ]);
+    }
+}

src/ArrayUtils.php

@@ -47,7 +47,7 @@ public static function hasStringKeys($value, $allowEmpty = false)
             return $allowEmpty;
         }
 
-        return count(array_filter(array_keys($value), 'is_string')) > 0;
+        return [] !== array_filter(array_keys($value), 'is_string');
     }
 
     /**
@@ -67,7 +67,7 @@ public static function hasIntegerKeys($value, $allowEmpty = false)
             return $allowEmpty;
         }
 
-        return count(array_filter(array_keys($value), 'is_int')) > 0;
+        return [] !== array_filter(array_keys($value), 'is_int');
     }
 
     /**
@@ -94,7 +94,7 @@ public static function hasNumericKeys($value, $allowEmpty = false)
             return $allowEmpty;
         }
 
-        return count(array_filter(array_keys($value), 'is_numeric')) > 0;
+        return [] !== array_filter(array_keys($value), 'is_numeric');
     }
 
     /**