Change the upper limit of required version from 7.2.x to 7.3.x.

.gitignore

@@ -0,0 +1,38 @@
+.deps
+.libs
+Makefile
+Makefile.fragments
+Makefile.global
+Makefile.objects
+acinclude.m4
+aclocal.m4
+autom4te.cache
+build
+config.guess
+config.h
+config.h.in
+config.log
+config.nice
+config.status
+config.sub
+configure
+configure.in
+configure.ac
+install-sh
+libtool
+ltmain.sh
+missing
+mkinstalldirs
+modules
+run-tests.php
+
+*.la
+*.lo
+*.o
+
+*.swp
+.*.rej
+*.rej
+.*~
+*~
+.#*

.travis.yml

@@ -0,0 +1,18 @@
+sudo: false
+language: php
+
+php:
+  - 7.2
+  - 7.3
+
+addons:
+  apt:
+    packages:
+      - libmcrypt-dev
+    update: true
+
+before_script:
+  - phpize && ./configure && make
+
+script:
+  - make test REPORT_EXIT_STATUS=1 NO_INTERACTION=1 TESTS="--show-all"

package.xml

@@ -4,7 +4,7 @@
     <channel>pecl.php.net</channel>
     <summary>Bindings for the libmcrypt library</summary>
     <description>
-	    Provides bindings for the unmaintained libmcrypt.
+        Provides bindings for the unmaintained libmcrypt.
     </description>
     <lead>
         <name>Derick Rethans</name>
@@ -31,7 +31,7 @@
     </version>
     <stability>
         <release>snapshot</release>
-	<api>stable</api>
+        <api>stable</api>
     </stability>
     <license uri="http://www.php.net/license">PHP License</license>
     <notes>
@@ -118,8 +118,8 @@
         <required>
             <php>
                 <min>7.2.0</min>
-                <max>7.3.0</max>
-                <exclude>7.3.0</exclude>
+                <max>7.4.0</max>
+                <exclude>7.4.0</exclude>
             </php>
             <pearinstaller>
                 <min>1.4.0</min>