diff --git a/php/README.md b/php/README.md
index fdbbcff0..68fd8647 100644
--- a/php/README.md
+++ b/php/README.md
@@ -2,7 +2,8 @@
 > The docker images for running PHP Kokoro builds for Cloud repositories.
 
 ## Docker Registry
-This image is available at `gcr.io/cloud-devrel-kokoro-resources/php##`.  You can try it out by running:
+The images for individual versions of PHP are available at `gcr.io/cloud-devrel-kokoro-resources/php##`.
+You can try them out by running:
 
 ```sh
 $ docker run --rm -it gcr.io/cloud-devrel-kokoro-resources/php72
@@ -11,6 +12,23 @@ $ docker run --rm -it gcr.io/cloud-devrel-kokoro-resources/php74
 $ docker run --rm -it gcr.io/cloud-devrel-kokoro-resources/php80
 ```
 
+An image containing all [supported versions][php-version-support] of PHP is available
+at `gcr.io/cloud-devrel-kokoro-resources/php`. You can try it out by running"
+
+```sh
+$ docker run --rm -it gcr.io/cloud-devrel-kokoro-resources/php
+```
+
+When using the image, switching between versions of PHP is done using [PHPBrew][phpbrew]:
+
+```sh
+# Switch to PHP 8.0
+phpbrew switch $(phpbrew list | grep 8.0)
+```
+
+[php-version-support]: https://www.php.net/supported-versions.php
+[phpbrew]: https://github.com/phpbrew/phpbrew
+
 ## Questions
 Please reach out to `php-cloud@google.com` with any questions!
 
diff --git a/php/cloudbuild-test.yaml b/php/cloudbuild-test.yaml
index e6794b10..0043b3f9 100644
--- a/php/cloudbuild-test.yaml
+++ b/php/cloudbuild-test.yaml
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-timeout: 14400s  # 4 hours
+timeout: 28800s  # 6 hours
 steps:
 
 # PHP 7.2
@@ -38,3 +38,9 @@ steps:
   args: ['build', '-t', 'gcr.io/cloud-devrel-kokoro-resources/php80', '.']
   dir: 'php/php80'
   waitFor: ['-']
+
+# PHP 7.3 / 7.4 / 8.0
+- name: gcr.io/cloud-builders/docker
+  args: ['build', '-t', 'gcr.io/cloud-devrel-kokoro-resources/php', '.']
+  dir: 'php/php'
+  waitFor: ['-']
diff --git a/php/cloudbuild.yaml b/php/cloudbuild.yaml
index 13cb8a8f..8438a78d 100644
--- a/php/cloudbuild.yaml
+++ b/php/cloudbuild.yaml
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-timeout: 14400s  # 4 hours
+timeout: 21600s  # 6 hours
 steps:
 
 # PHP 7.2
@@ -39,8 +39,15 @@ steps:
   dir: 'php/php80'
   waitFor: ['-']
 
+# PHP 7.3 / 7.4 / 8.0
+- name: gcr.io/cloud-builders/docker
+  args: ['build', '-t', 'gcr.io/cloud-devrel-kokoro-resources/php', '.']
+  dir: 'php/php'
+  waitFor: ['-']
+
 images:
   - gcr.io/cloud-devrel-kokoro-resources/php72
   - gcr.io/cloud-devrel-kokoro-resources/php73
   - gcr.io/cloud-devrel-kokoro-resources/php74
   - gcr.io/cloud-devrel-kokoro-resources/php80
+  - gcr.io/cloud-devrel-kokoro-resources/php
diff --git a/php/php/Dockerfile b/php/php/Dockerfile
new file mode 100644
index 00000000..bcc11640
--- /dev/null
+++ b/php/php/Dockerfile
@@ -0,0 +1,117 @@
+FROM gcr.io/gcp-runtimes/ubuntu_18_0_4
+
+ENV PHPBREW_ROOT /root/.phpbrew
+ENV PHPBREW_HOME /root/.phpbrew
+ENV PHPBREW_SET_PROMPT 1
+
+# ENV DEBIAN_FRONTEND noninteractive
+RUN apt-get update \
+  && apt-get -qqy install git \
+  && apt-get -qqy install wget \
+  && apt-get -qqy install curl \
+  && apt-get -qqy install ant ant-contrib sqlite3 \
+  && apt-get -qqy install \
+      autoconf \
+      build-essential \
+      libbz2-dev \
+      libreadline-dev \
+      libsqlite3-dev \
+      libssl-dev \
+      libxml2-dev \
+      libxslt1-dev \
+      libonig-dev \
+      php7.2-cli \
+      php7.2-bz2 \
+      pkg-config \
+      libcurl4-gnutls-dev \
+      libzip-dev zip \
+      libmagickwand-dev \
+      php-imagick \
+      jq \
+  && apt-get clean -y \
+  && apt-get autoclean -y \
+  && apt-get autoremove -y \
+  && rm -rf /var/lib/{apt,dpkg,cache,log}/ \
+  && rm -rf /var/lib/apt/lists/*
+
+# Use a better shell
+RUN rm /bin/sh && ln -s /bin/bash /bin/sh
+
+# Install and initialize PHPBrew
+RUN mkdir -p /usr/bin/ \
+    && wget -q -O /usr/bin/phpbrew https://github.com/phpbrew/phpbrew/raw/master/phpbrew \
+    && chmod +x /usr/bin/phpbrew \
+    && phpbrew init \
+    && echo 'source $HOME/.phpbrew/bashrc' >> /root/.bashrc
+
+# Install PHP 7.3
+RUN phpbrew install "7.3" \
+    +default +bcmath +bz2 +calendar +cli +ctype +dom +fileinfo +filter +json \
+    +mbregex +mbstring +mhash +pcntl +pcre +pdo +phar +posix +readline +sockets \
+    +tokenizer +xml +curl +zip +openssl=yes +opcache +fpm +sqlite +mysql \
+    +default +intl +gettext
+
+# Install PHP 7.4
+RUN phpbrew install "7.4" \
+    +default +bcmath +bz2 +calendar +cli +ctype +dom +fileinfo +filter +json \
+    +mbregex +mbstring +mhash +pcntl +pcre +pdo +phar +posix +readline +sockets \
+    +tokenizer +xml +curl +zip +openssl=yes +opcache +fpm +sqlite +mysql \
+    +default +intl +gettext
+
+# Install PHP 8.0
+RUN phpbrew install "8.0" \
+    +default +bcmath +bz2 +calendar +cli +ctype +dom +fileinfo +filter +json \
+    +mbregex +mbstring +mhash +pcntl +pcre +pdo +phar +posix +readline +sockets \
+    +tokenizer +xml +curl +zip +openssl=yes +opcache +fpm +sqlite +mysql \
+    +default +intl +gettext
+
+# Install and enable Imagemagick extension for PHP 7.3, 7.4, and 8.0
+RUN source ~/.phpbrew/bashrc \
+    && phpbrew switch $(phpbrew list | grep 7.3) && phpbrew ext install imagick \
+    && phpbrew switch $(phpbrew list | grep 7.4) && phpbrew ext install imagick \
+    # On PHP 8.0, Imagemagick must be compiled from src because it is not yet
+    # available via PECL
+    && phpbrew switch $(phpbrew list | grep 8.0) \
+        && git clone https://github.com/Imagick/imagick /tmp/imagick \
+        && cd /tmp/imagick \
+        && phpize \
+        && ./configure \
+        && make \
+        && make install \
+        && phpbrew ext enable imagick
+
+# Install and enable gRPC/memcache/opcache extensions for PHP 7.3, 7.4, and 8.0
+RUN source ~/.phpbrew/bashrc \
+    && phpbrew each phpbrew ext install grpc \
+    && phpbrew each phpbrew ext install memcache \
+    && phpbrew each phpbrew ext enable opcache
+
+# Install composer
+RUN wget -q -O /usr/bin/composer https://getcomposer.org/composer.phar && chmod +x /usr/bin/composer
+
+# Install Google Cloud SDK
+RUN curl https://dl.google.com/dl/cloudsdk/release/google-cloud-sdk.tar.gz \
+        -o ${HOME}/google-cloud-sdk.tar.gz \
+    && tar xzf ${HOME}/google-cloud-sdk.tar.gz -C $HOME \
+    && ${HOME}/google-cloud-sdk/install.sh \
+        --usage-reporting false \
+        --path-update false \
+        --command-completion false \
+    && source ${HOME}/google-cloud-sdk/path.bash.inc
+
+# Install Cloud SQL proxy
+RUN wget https://dl.google.com/cloudsql/cloud_sql_proxy.linux.amd64 -O cloud_sql_proxy \
+    && chmod +x cloud_sql_proxy \
+    && mv cloud_sql_proxy /usr/local/bin
+
+# Make composer and gcloud bins available via the PATH variable
+ENV PATH="$PATH:/root/.config/composer/vendor/bin:/root/google-cloud-sdk/bin"
+
+# Configure Google Cloud SDK
+RUN gcloud config set app/promote_by_default false && \
+    gcloud config set disable_prompts true && \
+    gcloud -q components install app-engine-python && \
+    gcloud -q components update
+
+# Install php-cs-fixer
+RUN composer global require friendsofphp/php-cs-fixer