Revert "优化在 phar 模式下多个系统同时使用此组件时可能会造成的临时文件权限问题"

This reverts commit b465f67.

src/CaptchaBuilder.php

@@ -501,24 +501,18 @@ public function build($width = 150, $height = 40, $font = null, $fingerprint = n
      * @param $font
      * @return string
      */
-    protected function getFontPath($font, $prefix = 0)
+    protected function getFontPath($font)
     {
         static $fontPathMap = [];
         if (!\class_exists(\Phar::class, false) || !\Phar::running()) {
             return $font;
         }
 
-        $fileName = ($prefix ? "$prefix-" : '') . basename($font);
         $tmpPath = sys_get_temp_dir() ?: '/tmp';
-        $filePath = "$tmpPath/" . $fileName;
+        $filePath = "$tmpPath/" . basename($font);
         clearstatcache();
-        if (!is_file($filePath)) {
+        if (!isset($fontPathMap[$font]) || !is_file($filePath)) {
             file_put_contents($filePath, file_get_contents($font));
-        }
-        if (!is_readable($filePath)){
-          return $this->getFontPath($font, $prefix+1);
-        }
-        if (!isset($fontPathMap[$font]) ) {
             $fontPathMap[$font] = $filePath;
         }
         return $fontPathMap[$font];