minor symfony#57550 [Lock][Process] Replace strtok calls (alexandre-daubois)

This PR was merged into the 7.2 branch.

Discussion
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[Lock][Process] Replace `strtok` calls

| Q             | A
| ------------- | ---
| Branch?       | 7.2
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        | symfony#57542
| License       | MIT

I targeted 5.4, I think this is a good thing in order to be future-proof and help potential fixes upmerges, strtok being deprecated or not. Rebasing on 7.2 is not a big deal though if needed, as I only found 1 more occurrence on the latest branch.

Commits
-------

c76ba0d [Lock][Process] Replace `strtok` calls

Author: nicolas-grekas

src/Symfony/Component/Lock/Store/DoctrineDbalPostgreSqlStore.php

@@ -268,7 +268,7 @@ private function filterDsn(#[\SensitiveParameter] string $dsn): string
         }
 
         [$scheme, $rest] = explode(':', $dsn, 2);
-        $driver = strtok($scheme, '+');
+        $driver = substr($scheme, 0, strpos($scheme, '+') ?: null);
         if (!\in_array($driver, ['pgsql', 'postgres', 'postgresql'])) {
             throw new InvalidArgumentException(\sprintf('The adapter "%s" does not support the "%s" driver.', __CLASS__, $driver));
         }

src/Symfony/Component/Process/ExecutableFinder.php

@@ -79,8 +79,14 @@ public function find(string $name, ?string $default = null, array $extraDirs = [
             }
         }
 
+        if (!\function_exists('exec')) {
+            return $default;
+        }
+
         $command = '\\' === \DIRECTORY_SEPARATOR ? 'where' : 'command -v --';
-        if (\function_exists('exec') && ($executablePath = strtok(@exec($command.' '.escapeshellarg($name)), \PHP_EOL)) && @is_executable($executablePath)) {
+        $execResult = @exec($command.' '.escapeshellarg($name));
+
+        if (($executablePath = substr($execResult, 0, strpos($execResult, \PHP_EOL) ?: null)) && @is_executable($executablePath)) {
             return $executablePath;
         }
 

src/Symfony/Component/Process/PhpExecutableFinder.php

@@ -33,8 +33,13 @@ public function find(bool $includeArgs = true): string|false
     {
         if ($php = getenv('PHP_BINARY')) {
             if (!is_executable($php)) {
+                if (!\function_exists('exec')) {
+                    return false;
+                }
+
                 $command = '\\' === \DIRECTORY_SEPARATOR ? 'where' : 'command -v --';
-                if (\function_exists('exec') && $php = strtok(exec($command.' '.escapeshellarg($php)), \PHP_EOL)) {
+                $execResult = exec($command.' '.escapeshellarg($php));
+                if ($php = substr($execResult, 0, strpos($execResult, \PHP_EOL) ?: null)) {
                     if (!is_executable($php)) {
                         return false;
                     }