--- linux-gpib-4.0.3/language/php/gpib.c.orig	2016-04-09 15:33:09.000000000 +0200
+++ linux-gpib-4.0.3/language/php/gpib.c	2016-07-14 16:47:47.929605503 +0200
@@ -60,6 +60,10 @@
 #include "php.h"
 #include "ext/standard/info.h"
 
+#if PHP_MAJOR_VERSION >= 7
+#define PZVAL_IS_REF(pz) Z_ISREF_P(pz)
+#endif
+
 /* ---- macros for declarations -------------------------- */
 
 #define FUN_ACCESSOR(functionName) \
@@ -495,7 +499,11 @@
 		) == FAILURE) {
 		return;
 	}
+#if PHP_MAJOR_VERSION >= 7
+	RETURN_STRING((char*)gpib_error_string(n));
+#else
 	RETURN_STRING((char*)gpib_error_string(n), 1);
+#endif
 }
 #endif
 
@@ -550,7 +558,11 @@
 	memset(p,0,len+1);
 	r=ibrd(n,p,len);
 	p[ibcnt]='\0';
+#if PHP_MAJOR_VERSION >= 7
+	ZVAL_STRING(z,p);
+#else
 	ZVAL_STRING(z,p,1);
+#endif
 	efree(p);
 	RETURN_LONG(r);
 }