[PHP] Add support for PHP7.

PHP5's C extension API has changed substantially so you need to use
-php7 to specify you want PHP7 compatible wrappers.
Fixes https://github.com/swig/swig/issues/571

Examples/php5/pragmas/Makefile

@@ -0,0 +1,20 @@
+TOP        = ../..
+SWIGEXE    = $(TOP)/../swig
+SWIG_LIB_DIR = $(TOP)/../$(TOP_BUILDDIR_TO_TOP_SRCDIR)Lib
+SRCS       =
+TARGET     = example
+INTERFACE  = example.i
+LIBS       =
+SWIGOPT    =
+
+check: build
+	$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' php_run
+
+build:
+	$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' SRCS='$(SRCS)' \
+	SWIG_LIB_DIR='$(SWIG_LIB_DIR)' SWIGEXE='$(SWIGEXE)' \
+	SWIGOPT='$(SWIGOPT)' TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' \
+	php
+
+clean:
+	$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' php_clean

Examples/php5/pragmas/example.i

@@ -0,0 +1,31 @@
+/* File : example.i */
+%module example
+
+%init{
+  zend_printf("This was %%init\n");
+}
+
+%minit{
+  zend_printf("This was %%minit\n");
+}
+
+%mshutdown{
+  zend_printf("This was %%shutdown\n");
+}
+
+%rinit{
+  zend_printf("This was %%rinit\n");
+}
+
+%rshutdown{
+  zend_printf("This was %%rshutdown\n");
+}
+
+%pragma(php) include="include.php";
+
+%pragma(php) code="
+# This code is inserted into example.php
+echo \"this was php code\\n\";
+"
+
+%pragma(php) phpinfo="php_info_print_table_start();"

Examples/php5/pragmas/include.php

@@ -0,0 +1,7 @@
+<?php
+
+# This code is inserted into example.php
+echo "this is include.php\n";
+
+
+?>

Examples/php5/pragmas/runme.php

@@ -0,0 +1,5 @@
+<?php
+
+require "example.php";
+
+?>