use http_build_query instead of sprintf to improve readability

lib/Providers/Qr/GoogleChartsQrCodeProvider.php

@@ -23,12 +23,14 @@ class GoogleChartsQrCodeProvider extends BaseHTTPQRCodeProvider
 
     public function getUrl(string $qrtext, int $size): string
     {
-        return sprintf(
-            'https://chart.googleapis.com/chart?chs=%1$sx%1$s&chld=%2$s&cht=qr&choe=%3$s&chl=%4$s',
-            $size,
-            urlencode(strtoupper($this->errorcorrectionlevel) . '|' . $this->margin),
-            $this->encoding,
-            rawurlencode($qrtext)
+        $queryParameters = array(
+            'chs' => $size . 'x' . $size,
+            'chld' => strtoupper($this->errorcorrectionlevel) . '|' . $this->margin,
+            'cht' => 'qr',
+            'choe' => $this->encoding,
+            'chl' => $qrtext,
         );
+
+        return 'https://chart.googleapis.com/chart?' . http_build_query($queryParameters);
     }
 }

lib/Providers/Qr/ImageChartsQRCodeProvider.php

@@ -25,12 +25,13 @@ class ImageChartsQRCodeProvider extends BaseHTTPQRCodeProvider
 
     public function getUrl(string $qrtext, int $size): string
     {
-        return sprintf(
-            'https://image-charts.com/chart?cht=qr&chs=%1$dx%1$d&chld=%2$s|%3$s&chl=%4$s',
-            ceil($size / 2),
-            $this->errorcorrectionlevel,
-            $this->margin,
-            rawurlencode($qrtext)
+        $queryParameters = array(
+            'cht' => 'qr',
+            'chs' => ceil($size / 2) . 'x' . ceil($size / 2),
+            'chld' => $this->errorcorrectionlevel . '|' . $this->margin,
+            'chl' => $qrtext,
         );
+
+        return 'https://image-charts.com/chart?' . http_build_query($queryParameters);
     }
 }

lib/Providers/Qr/QRServerProvider.php

@@ -38,17 +38,18 @@ class QRServerProvider extends BaseHTTPQRCodeProvider
 
     public function getUrl(string $qrtext, int $size): string
     {
-        return sprintf(
-            'https://api.qrserver.com/v1/create-qr-code/?size=%1$sx%1$s&ecc=%2$s&margin=%3$s&qzone=%4$s&bgcolor=%5$s&color=%6$s&format=%7$s&data=%8$s',
-            $size,
-            strtoupper($this->errorcorrectionlevel),
-            $this->margin,
-            $this->qzone,
-            $this->decodeColor($this->bgcolor),
-            $this->decodeColor($this->color),
-            strtolower($this->format),
-            rawurlencode($qrtext)
+        $queryParameters = array(
+            'size' => $size . 'x' . $size,
+            'ecc' => strtoupper($this->errorcorrectionlevel),
+            'margin' => $this->margin,
+            'qzone' => $this->qzone,
+            'bgcolor' => $this->decodeColor($this->bgcolor),
+            'color' => $this->decodeColor($this->color),
+            'format' => strtolower($this->format),
+            'data' => $qrtext,
         );
+
+        return 'https://api.qrserver.com/v1/create-qr-code/?' . http_build_query($queryParameters);
     }
 
     private function decodeColor(string $value): string

lib/Providers/Qr/QRicketProvider.php

@@ -34,14 +34,15 @@ class QRicketProvider extends BaseHTTPQRCodeProvider
 
     public function getUrl(string $qrtext, int $size): string
     {
-        return sprintf(
-            'http://qrickit.com/api/qr?qrsize=%s&e=%s&bgdcolor=%s&fgdcolor=%s&t=%s&d=%s',
-            $size,
-            strtolower($this->errorcorrectionlevel),
-            $this->bgcolor,
-            $this->color,
-            strtolower($this->format),
-            rawurlencode($qrtext)
+        $queryParameters = array(
+            'qrsize' => $size,
+            'e' => strtolower($this->errorcorrectionlevel),
+            'bgdcolor' => $this->bgcolor,
+            'fgdcolor' => $this->color,
+            't' => strtolower($this->format),
+            'd' => $qrtext,
         );
+
+        return 'http://qrickit.com/api/qr?' . http_build_query($queryParameters);
     }
 }