Fixed Bug 64760 var_export() does not use full precision for floating-point numbers

Author: Yasuo Ohgaki

ext/standard/tests/general_functions/var_export-locale.phpt

@@ -784,15 +784,15 @@ string(20) "array (
 Iteration 13
 array (
   0 => 10.5,
-  1 => 5.6,
+  1 => 5.5999999999999996,
 )
 array (
   0 => 10.5,
-  1 => 5.6,
+  1 => 5.5999999999999996,
 )
-string(34) "array (
+string(49) "array (
   0 => 10.5,
-  1 => 5.6,
+  1 => 5.5999999999999996,
 )"
 
 

ext/standard/tests/general_functions/var_export_basic3.phpt

@@ -96,9 +96,9 @@ string(1) "0"
 
 
 -- Iteration: -0.1 --
--0.1
--0.1
-string(4) "-0.1"
+-0.10000000000000001
+-0.10000000000000001
+string(20) "-0.10000000000000001"
 
 
 -- Iteration: 10.0000000000000000005 --
@@ -120,9 +120,9 @@ string(6) "100000"
 
 
 -- Iteration: 1e-5 --
-1.0E-5
-1.0E-5
-string(6) "1.0E-5"
+1.0000000000000001E-5
+1.0000000000000001E-5
+string(21) "1.0000000000000001E-5"
 
 
 -- Iteration: 1e+5 --
@@ -144,9 +144,9 @@ string(6) "100000"
 
 
 -- Iteration: 1E-5 --
-1.0E-5
-1.0E-5
-string(6) "1.0E-5"
+1.0000000000000001E-5
+1.0000000000000001E-5
+string(21) "1.0000000000000001E-5"
 
 
 -- Iteration: .5e+7 --
@@ -156,20 +156,20 @@ string(7) "5000000"
 
 
 -- Iteration: .6e-19 --
-6.0E-20
-6.0E-20
-string(7) "6.0E-20"
+6.0000000000000006E-20
+6.0000000000000006E-20
+string(22) "6.0000000000000006E-20"
 
 
 -- Iteration: .05E+44 --
-5.0E+42
-5.0E+42
-string(7) "5.0E+42"
+5.0000000000000001E+42
+5.0000000000000001E+42
+string(22) "5.0000000000000001E+42"
 
 
 -- Iteration: .0034E-30 --
-3.4E-33
-3.4E-33
-string(7) "3.4E-33"
+3.4000000000000001E-33
+3.4000000000000001E-33
+string(22) "3.4000000000000001E-33"
 
 ===DONE===

ext/standard/tests/general_functions/var_export_basic5.phpt

@@ -233,15 +233,15 @@ string(20) "array (
 --Iteration: array(10.5, 5.6) --
 array (
   0 => 10.5,
-  1 => 5.6,
+  1 => 5.5999999999999996,
 )
 array (
   0 => 10.5,
-  1 => 5.6,
+  1 => 5.5999999999999996,
 )
-string(34) "array (
+string(49) "array (
   0 => 10.5,
-  1 => 5.6,
+  1 => 5.5999999999999996,
 )"
 
 
@@ -274,4 +274,4 @@ string(41) "array (
   1 => 'test',
 )"
 
-===DONE===
+===DONE===

ext/standard/var.c

@@ -436,7 +436,7 @@ PHPAPI void php_var_export_ex(zval **struc, int level, smart_str *buf TSRMLS_DC)
 		smart_str_append_long(buf, Z_LVAL_PP(struc));
 		break;
 	case IS_DOUBLE:
-		tmp_len = spprintf(&tmp_str, 0,"%.*H", (int) EG(precision), Z_DVAL_PP(struc));
+		tmp_len = spprintf(&tmp_str, 0,"%.*H", PG(serialize_precision), Z_DVAL_PP(struc));
 		smart_str_appendl(buf, tmp_str, tmp_len);
 		efree(tmp_str);
 		break;

tests/lang/bug24640.phpt

@@ -36,22 +36,22 @@ test(1.7e-1000);
 ===DONE===
 <?php exit(0); ?>
 --EXPECTF--
-1.7E+300
+1.7000000000000001E+300
 float(1.7E+300)
 1.7E+300
 1.7E+300
 ------
-1.7E-300
+1.7000000000000001E-300
 float(1.7E-300)
 1.7E-300
 1.7E-300
 ------
-1.7E+79
+1.7000000000000002E+79
 float(1.7E+79)
 1.7E+79
 1.7E+79
 ------
-1.7E-79
+1.6999999999999999E-79
 float(1.7E-79)
 1.7E-79
 1.7E-79
@@ -71,7 +71,7 @@ float(1.7E+81)
 1.7E+81
 1.7E+81
 ------
-1.7E-81
+1.6999999999999999E-81
 float(1.7E-81)
 1.7E-81
 1.7E-81
@@ -81,7 +81,7 @@ float(I%s)
 I%s
 I%s
 ------
-1.69998107421E-319
+1.6999810742105611E-319
 float(1.69998107421E-319)
 1.69998107421E-319
 1.69998107421E-319
@@ -91,7 +91,7 @@ float(I%s)
 I%s
 I%s
 ------
-1.70007988734E-320
+1.7000798873397294E-320
 float(1.70007988734E-320)
 1.70007988734E-320
 1.70007988734E-320
@@ -101,7 +101,7 @@ float(I%s)
 I%s
 I%s
 ------
-1.69958582169E-321
+1.6995858216938881E-321
 float(1.69958582169E-321)
 1.69958582169E-321
 1.69958582169E-321