Add support for running composer with phpdbg (#7798)

bin/composer

@@ -1,7 +1,7 @@
 #!/usr/bin/env php
 <?php
 
-if (PHP_SAPI !== 'cli') {
+if (PHP_SAPI !== 'cli' && PHP_SAPI !== 'phpdbg') {
     echo 'Warning: Composer should be invoked via the CLI version of PHP, not the '.PHP_SAPI.' SAPI'.PHP_EOL;
 }
 

src/Composer/EventDispatcher/EventDispatcher.php

@@ -262,16 +262,17 @@ class EventDispatcher
     protected function getPhpExecCommand()
     {
         $finder = new PhpExecutableFinder();
-        $phpPath = $finder->find();
+        $phpPath = $finder->find(false);
         if (!$phpPath) {
             throw new \RuntimeException('Failed to locate PHP binary to execute '.$phpPath);
         }
-
+        $phpArgs = $finder->findArguments();
+        $phpArgs = $phpArgs ? ' ' . implode(' ', $phpArgs) : '';
         $allowUrlFOpenFlag = ' -d allow_url_fopen=' . ProcessExecutor::escape(ini_get('allow_url_fopen'));
         $disableFunctionsFlag = ' -d disable_functions=' . ProcessExecutor::escape(ini_get('disable_functions'));
         $memoryLimitFlag = ' -d memory_limit=' . ProcessExecutor::escape(ini_get('memory_limit'));
 
-        return ProcessExecutor::escape($phpPath) . $allowUrlFOpenFlag . $disableFunctionsFlag . $memoryLimitFlag;
+        return ProcessExecutor::escape($phpPath) . $phpArgs . $allowUrlFOpenFlag . $disableFunctionsFlag . $memoryLimitFlag;
     }
 
     /**

src/Composer/Util/StreamContextFactory.php

@@ -40,7 +40,7 @@ final class StreamContextFactory
         ));
 
         // Handle HTTP_PROXY/http_proxy on CLI only for security reasons
-        if (PHP_SAPI === 'cli' && (!empty($_SERVER['HTTP_PROXY']) || !empty($_SERVER['http_proxy']))) {
+        if ((PHP_SAPI === 'cli' || PHP_SAPI === 'phpdbg') && (!empty($_SERVER['HTTP_PROXY']) || !empty($_SERVER['http_proxy']))) {
             $proxy = parse_url(!empty($_SERVER['http_proxy']) ? $_SERVER['http_proxy'] : $_SERVER['HTTP_PROXY']);
         }