Only run update-alternatives for php-fpm.sock when multiple PHP version are installed (#30)

lib/os/class.ISPConfigDebian10OS.inc.php

@@ -57,7 +57,12 @@ class ISPConfigDebian10OS extends ISPConfigDebianOS {
 		}
 
 		if(ISPConfig::shallInstall('web')) {
-			$cmd = 'update-alternatives --set php-cgi /usr/bin/php-cgi7.3 ; update-alternatives --set php-fpm.sock /run/php/php7.3-fpm.sock';
+			// When --use-php-system is used, there is no alternative for php-fpm.sock.
+			if(ISPConfig::wantsPHP() === 'system') {
+				$cmd = 'update-alternatives --set php-cgi /usr/bin/php-cgi7.3';
+			} else {
+				$cmd = 'update-alternatives --set php-cgi /usr/bin/php-cgi7.3 ; update-alternatives --set php-fpm.sock /run/php/php7.3-fpm.sock';
+			}
 			$result = $this->exec($cmd);
 			if($result === false) {
 				throw new ISPConfigOSException('Command ' . $cmd . ' failed.');

lib/os/class.ISPConfigDebianOS.inc.php

@@ -182,7 +182,12 @@ class ISPConfigDebianOS extends ISPConfigBaseOS {
 		}
 
 		if(ISPConfig::shallInstall('web')) {
-			$cmd = 'update-alternatives --set php-cgi /usr/bin/php-cgi7.0 ; update-alternatives --set php-fpm.sock /run/php/php7.0-fpm.sock';
+			// When --use-php-system is used, there is no alternative for php-fpm.sock.
+			if(ISPConfig::wantsPHP() === 'system') {
+				$cmd = 'update-alternatives --set php-cgi /usr/bin/php-cgi7.0';
+			} else {
+				$cmd = 'update-alternatives --set php-cgi /usr/bin/php-cgi7.0 ; update-alternatives --set php-fpm.sock /run/php/php7.0-fpm.sock';
+			}
 			$result = $this->exec($cmd);
 			if($result === false) {
 				throw new ISPConfigOSException('Command ' . $cmd . ' failed.');

lib/os/class.ISPConfigUbuntu2004OS.inc.php

@@ -107,7 +107,12 @@ maxretry = 3';
 		}
 
 		if(ISPConfig::shallInstall('web')) {
-			$cmd = 'update-alternatives --set php-cgi /usr/bin/php-cgi7.4 ; update-alternatives --set php-fpm.sock /run/php/php7.4-fpm.sock';
+			// When --use-php-system is used, there is no alternative for php-fpm.sock.
+			if(ISPConfig::wantsPHP() === 'system') {
+				$cmd = 'update-alternatives --set php-cgi /usr/bin/php-cgi7.4';
+			} else {
+				$cmd = 'update-alternatives --set php-cgi /usr/bin/php-cgi7.4 ; update-alternatives --set php-fpm.sock /run/php/php7.4-fpm.sock';
+			}
 			$result = $this->exec($cmd);
 			if($result === false) {
 				throw new ISPConfigOSException('Command ' . $cmd . ' failed.');

lib/os/class.ISPConfigUbuntuOS.inc.php

@@ -90,7 +90,12 @@ maxretry = 3';
 		}
 
 		if(ISPConfig::shallInstall('web')) {
-			$cmd = 'update-alternatives --set php-cgi /usr/bin/php-cgi7.2 ; update-alternatives --set php-fpm.sock /run/php/php7.2-fpm.sock';
+			// When --use-php-system is used, there is no alternative for php-fpm.sock.
+			if(ISPConfig::wantsPHP() === 'system') {
+				$cmd = 'update-alternatives --set php-cgi /usr/bin/php-cgi7.2';
+			} else {
+				$cmd = 'update-alternatives --set php-cgi /usr/bin/php-cgi7.2 ; update-alternatives --set php-fpm.sock /run/php/php7.2-fpm.sock';
+			}
 			$result = $this->exec($cmd);
 			if($result === false) {
 				throw new ISPConfigOSException('Command ' . $cmd . ' failed.');