Install PHP5.2/5.3 on trusty

.travis.yml

@@ -12,6 +12,7 @@ cache:
   directories:
     - vendor
     - $HOME/.composer/cache
+    - $HOME/.phpbrew
 
 before_install:
   - nvm install 7 && nvm use 7
@@ -22,9 +23,10 @@ matrix:
       env: WP_VERSION=latest
     - php: 5.6
       env: WP_VERSION=latest
-    - php: 5.2
-      env: WP_VERSION=latest
-      dist: precise
+    - php: 7.1
+      env: WP_VERSION=latest SWITCH_TO_PHP=5.3
+    - php: 7.1
+      env: WP_VERSION=latest SWITCH_TO_PHP=5.2
     - php: 5.6
       env: TRAVISCI=phpcs
     - php: 7.1
@@ -34,15 +36,10 @@ before_script:
   - export PATH="$HOME/.composer/vendor/bin:$PATH"
   - |
     if [[ ! -z "$WP_VERSION" ]] ; then
+      set -e
       bash bin/install-wp-tests.sh wordpress_test root '' localhost $WP_VERSION
-      if [[ ${TRAVIS_PHP_VERSION:0:2} == "5." ]]; then
-        mkdir -p $HOME/phpunit-bin
-        wget -O $HOME/phpunit-bin/phpunit https://phar.phpunit.de/phpunit-4.8.phar
-        chmod +x $HOME/phpunit-bin/phpunit
-        export PATH=$PATH:$HOME/phpunit-bin/
-      else
-        composer global require "phpunit/phpunit=5.7.*"
-      fi
+      source bin/install-php-phpunit.sh
+      set +e
     fi
   - |
     if [[ "$TRAVISCI" == "phpcs" ]] ; then
@@ -65,6 +62,9 @@ script:
         sleep .2 # Otherwise Travis doesn't want to print the whole message
         exit 1
       fi
+      echo Running with the following versions:
+      php -v
+      phpunit -v
       # Check parser syntax
       php lib/parser.php || exit 1
       # Run PHPUnit tests

bin/install-php-phpunit.sh

@@ -0,0 +1,124 @@
+#!/bin/bash
+
+# Uses phpbrew to install older php versions on modern(ish) distros.
+# Installs the correct version of phpunit for the requested php
+# version. ~/.phpbrew is expected to be cached so we only have
+# to build php the first time.
+
+# we have to save and restore the original working directory, because
+# phpbrew can mess up if we don't run it from the home directory
+ORIG_DIR=`pwd`;
+THIS_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+PHP52_PATH=$HOME/.phpbrew/php/php-5.2.17
+
+# install phpunit
+
+mkdir -p $HOME/phpunit-bin
+
+if [[ ${SWITCH_TO_PHP:0:3} == "5.2" ]]; then
+  # use the phpunit in the PHP5.2 installation
+  ln -s ${PHP52_PATH}/lib/php/phpunit/phpunit.php $HOME/phpunit-bin/phpunit
+elif [[ ${TRAVIS_PHP_VERSION:0:2} == "5." ]] || [[ ${SWITCH_TO_PHP:0:2} == "5." ]]; then
+  wget -O $HOME/phpunit-bin/phpunit https://phar.phpunit.de/phpunit-4.8.phar
+  chmod +x $HOME/phpunit-bin/phpunit
+else
+  composer global require "phpunit/phpunit=6.*"
+fi
+
+export PATH=$HOME/phpunit-bin/:$PATH
+
+if [[ ${SWITCH_TO_PHP:0:3} == "5.2" ]] || [[ ${SWITCH_TO_PHP:0:3} == "5.3" ]]; then
+  PHPBREW_BUILT_CHECK=$HOME/.phpbrew/bashrc
+
+  # directory to store phpbrew and old phpunit in
+  mkdir -p $HOME/php-utils-bin
+
+  # install phpbrew
+  curl -L -o $HOME/php-utils-bin/phpbrew https://github.com/phpbrew/phpbrew/raw/f6a422e1ba49293ee73bc4c317795c021bc57020/phpbrew
+  chmod +x $HOME/php-utils-bin/phpbrew
+
+  # needs to be on the path for switching php versions to work
+	export PATH=$HOME/php-utils-bin:$PATH
+
+  # php and phpunit3.6 installs should be cached, only build if they're not there.
+  if [ ! -f $PHPBREW_BUILT_CHECK ]; then
+
+    # init with known --old to get 5.2 and 5.3
+    $HOME/php-utils-bin/phpbrew init
+    $HOME/php-utils-bin/phpbrew known --old
+
+    # build PHP5.2
+    tail -F $HOME/.phpbrew/build/php-5.2.17/build.log &
+    TAIL_PID=$!
+    $HOME/php-utils-bin/phpbrew install --patch ${THIS_DIR}/patches/node.patch --patch ${THIS_DIR}/patches/openssl.patch 5.2 +default +mysql +pdo \
+    +gettext +phar +openssl -- --with-openssl-dir=/usr/include/openssl --enable-spl --with-mysql --with-mysqli=/usr/bin/mysql_config --with-pdo-mysql=/usr
+    kill -TERM $TAIL_PID
+
+    # build PHP5.3
+    tail -F $HOME/.phpbrew/build/php-5.3.29/build.log &
+    TAIL_PID=$!
+    $HOME/php-utils-bin/phpbrew install --patch ${THIS_DIR}/patches/node.patch --patch ${THIS_DIR}/patches/openssl.patch 5.3 +default +mysql +pdo \
+    +gettext +phar +openssl -- --with-openssl-dir=/usr/include/openssl --enable-spl --with-mysql --with-mysqli=/usr/bin/mysql_config --with-pdo-mysql=/usr
+    kill -TERM $TAIL_PID
+
+    # install PHPUnit 3.6. The only install method available is from source, using git branches old
+    # enough that they don't rely on any PHP5.3+ features. This clones each needed dependency
+    # and then we add the paths to the include_path by setting up an extra .ini file
+    cd ${PHP52_PATH}/lib/php
+
+    # dependencies
+    git clone --depth=1 --branch=1.1   git://github.com/sebastianbergmann/dbunit.git
+    git clone --depth=1 --branch=1.1   git://github.com/sebastianbergmann/php-code-coverage.git
+    git clone --depth=1 --branch=1.3.2 git://github.com/sebastianbergmann/php-file-iterator.git
+    git clone --depth=1 --branch=1.1.1 git://github.com/sebastianbergmann/php-invoker.git
+    git clone --depth=1 --branch=1.1.2 git://github.com/sebastianbergmann/php-text-template.git
+    git clone --depth=1 --branch=1.0.3 git://github.com/sebastianbergmann/php-timer.git
+    git clone --depth=1 --branch=1.1.4 git://github.com/sebastianbergmann/php-token-stream.git
+    git clone --depth=1 --branch=1.1   git://github.com/sebastianbergmann/phpunit-mock-objects.git
+    git clone --depth=1 --branch=1.1   git://github.com/sebastianbergmann/phpunit-selenium.git
+    git clone --depth=1 --branch=1.0.0 git://github.com/sebastianbergmann/phpunit-story.git
+
+    # and the version of phpunit that we expect to run with php 5.2
+    git clone --depth=1 --branch=3.6   git://github.com/sebastianbergmann/phpunit.git
+
+    # fix up the version number of phpunit
+    sed -i 's/@package_version@/3.6-git/g' phpunit/PHPUnit/Runner/Version.php
+
+    # now set up an ini file that adds all of the above to include_path for the PHP5.2 install
+    mkdir -p ${PHP52_PATH}/var/db
+    echo "include_path=.:${PHP52_PATH}/lib/php:${PHP52_PATH}/lib/php/dbunit:${PHP52_PATH}/lib/php/php-code-coverage:${PHP52_PATH}/lib/php/php-file-iterator:${PHP52_PATH}/lib/php/php-invoker:${PHP52_PATH}/lib/php/php-text-template:${PHP52_PATH}/lib/php/php-timer:${PHP52_PATH}/lib/php/php-token-stream:${PHP52_PATH}/lib/php/phpunit-mock-objects:${PHP52_PATH}/lib/php/phpunit-selenium:${PHP52_PATH}/lib/php/phpunit-story:${PHP52_PATH}/lib/php/phpunit" > ${PHP52_PATH}/var/db/path.ini
+
+    # one more PHPUnit dependency that we need to install using pear under PHP5.2
+    cd $HOME
+    export PHPBREW_RC_ENABLE=1
+    source $HOME/.phpbrew/bashrc
+    phpbrew use 5.2.17
+    pear channel-discover pear.symfony-project.com
+    pear install pear.symfony-project.com/YAML-1.0.2
+
+    # manually go back to the system php, we can't use `phpbrew switch-off`
+    # because we're running a version of php that phpbrew doesn't work with at this point
+    unset PHPBREW_PHP
+    unset PHPBREW_PATH
+    __phpbrew_set_path
+    __phpbrew_reinit
+    eval `$BIN env`
+
+    # clean up build directory
+    rm -rf $HOME/.phpbrew/build/*
+  fi
+
+  # all needed php versions and phpunit versions are installed, either from the above
+  # install script, or from travis cache, so switch to using them
+  cd $HOME
+  export PHPBREW_RC_ENABLE=1
+  source $HOME/.phpbrew/bashrc
+
+  if [[ ${SWITCH_TO_PHP:0:3} == "5.2" ]]; then
+    phpbrew use 5.2.17
+  else
+    phpbrew use 5.3.29
+  fi
+fi
+
+cd $ORIG_DIR

bin/patches/README.md

@@ -0,0 +1,2 @@
+This directory contains patches required to build
+older versions of PHP on trusty.

bin/patches/node.patch

@@ -0,0 +1,51 @@
+--- ext/dom/node.c	2012-08-06 17:49:48.826716692 +0800
++++ ext/dom/node.c	2012-08-06 17:52:47.633484660 +0800
+@@ -1895,9 +1895,17 @@ static void dom_canonicalization(INTERNA
+         RETVAL_FALSE;
+     } else {
+ 		if (mode == 0) {
++#ifdef LIBXML2_NEW_BUFFER
++            ret = xmlOutputBufferGetSize(buf);
++#else
+ 			ret = buf->buffer->use;
++#endif
+ 			if (ret > 0) {
++#ifdef LIBXML2_NEW_BUFFER
++                RETVAL_STRINGL((char *) xmlOutputBufferGetContent(buf), ret, 1);
++#else
+ 				RETVAL_STRINGL((char *) buf->buffer->content, ret, 1);
++#endif
+ 			} else {
+ 				RETVAL_EMPTY_STRING();
+ 			}
+--- ext/dom/documenttype.c	2012-08-06 18:02:16.019640870 +0800
++++ ext/dom/documenttype.c	2012-08-06 18:06:16.612228905 +0800
+@@ -205,7 +205,13 @@ int dom_documenttype_internal_subset_rea
+ 		if (buff != NULL) {
+ 			xmlNodeDumpOutput (buff, NULL, (xmlNodePtr) intsubset, 0, 0, NULL);
+ 			xmlOutputBufferFlush(buff);
++
++#ifdef LIBXML2_NEW_BUFFER
++			ZVAL_STRINGL(*retval, xmlOutputBufferGetContent(buff),
++			             xmlOutputBufferGetSize(buff), 1);
++#else
+ 			ZVAL_STRINGL(*retval, buff->buffer->content, buff->buffer->use, 1);
++#endif
+ 			(void)xmlOutputBufferClose(buff);
+ 			return SUCCESS;
+ 		}
+--- ext/simplexml/simplexml.c	2012-08-06 18:10:44.621017026 +0800
++++ ext/simplexml/simplexml.c	2012-08-06 18:12:48.016270419 +0800
+@@ -1417,7 +1417,12 @@ SXE_METHOD(asXML)
+
+ 			xmlNodeDumpOutput(outbuf, (xmlDocPtr) sxe->document->ptr, node, 0, 0, ((xmlDocPtr) sxe->document->ptr)->encoding);
+ 			xmlOutputBufferFlush(outbuf);
++#ifdef LIBXML2_NEW_BUFFER
++			RETVAL_STRINGL((char *)xmlOutputBufferGetContent(outbuf),
++			               xmlOutputBufferGetSize(outbuf), 1);
++#else
+ 			RETVAL_STRINGL((char *)outbuf->buffer->content, outbuf->buffer->use, 1);
++#endif
+ 			xmlOutputBufferClose(outbuf);
+ 		}
+ 	} else {

bin/patches/openssl.patch

@@ -0,0 +1,52 @@
+--- ext/openssl/xp_ssl.c
++++ ext/openssl/xp_ssl.c
+@@ -328,10 +328,12 @@ static inline int php_openssl_setup_cryp
+ 			sslsock->is_client = 1;
+ 			method = SSLv23_client_method();
+ 			break;
++#ifndef OPENSSL_NO_SSL2
+ 		case STREAM_CRYPTO_METHOD_SSLv2_CLIENT:
+ 			sslsock->is_client = 1;
+ 			method = SSLv2_client_method();
+ 			break;
++#endif
+ 		case STREAM_CRYPTO_METHOD_SSLv3_CLIENT:
+ 			sslsock->is_client = 1;
+ 			method = SSLv3_client_method();
+@@ -348,10 +350,12 @@ static inline int php_openssl_setup_cryp
+ 			sslsock->is_client = 0;
+ 			method = SSLv3_server_method();
+ 			break;
++#ifndef OPENSSL_NO_SSL2
+ 		case STREAM_CRYPTO_METHOD_SSLv2_SERVER:
+ 			sslsock->is_client = 0;
+ 			method = SSLv2_server_method();
+ 			break;
++#endif
+ 		case STREAM_CRYPTO_METHOD_TLS_SERVER:
+ 			sslsock->is_client = 0;
+ 			method = TLSv1_server_method();
+@@ -629,9 +633,11 @@ static inline int php_openssl_tcp_sockop
+ 				case STREAM_CRYPTO_METHOD_SSLv23_CLIENT:
+ 					sock->method = STREAM_CRYPTO_METHOD_SSLv23_SERVER;
+ 					break;
++#ifndef OPENSSL_NO_SSL2
+ 				case STREAM_CRYPTO_METHOD_SSLv2_CLIENT:
+ 					sock->method = STREAM_CRYPTO_METHOD_SSLv2_SERVER;
+ 					break;
++#endif
+ 				case STREAM_CRYPTO_METHOD_SSLv3_CLIENT:
+ 					sock->method = STREAM_CRYPTO_METHOD_SSLv3_SERVER;
+ 					break;
+@@ -911,9 +917,11 @@ php_stream *php_openssl_ssl_socket_facto
+ 	if (strncmp(proto, "ssl", protolen) == 0) {
+ 		sslsock->enable_on_connect = 1;
+ 		sslsock->method = STREAM_CRYPTO_METHOD_SSLv23_CLIENT;
++#ifndef OPENSSL_NO_SSL2
+ 	} else if (strncmp(proto, "sslv2", protolen) == 0) {
+ 		sslsock->enable_on_connect = 1;
+ 		sslsock->method = STREAM_CRYPTO_METHOD_SSLv2_CLIENT;
++#endif
+ 	} else if (strncmp(proto, "sslv3", protolen) == 0) {
+ 		sslsock->enable_on_connect = 1;
+ 		sslsock->method = STREAM_CRYPTO_METHOD_SSLv3_CLIENT;