Review the usage of apostrophes in error messages

Additionally, fixing some capitalization problems and wordings.

Author: kocsismate

Zend/tests/018.phpt

@@ -18,7 +18,7 @@ var_dump(constant("TEST_CONST2"));
 echo "Done\n";
 ?>
 --EXPECT--
-Undefined constant ''
+Undefined constant 
 int(1)
 string(4) "test"
 Done

Zend/tests/024.phpt

@@ -41,17 +41,17 @@ NULL
 Warning: Undefined variable $b in %s on line %d
 int(1)
 
-Warning: Attempt to read property '1' on int in %s on line %d
+Warning: Attempt to read property "1" on int in %s on line %d
 NULL
 
-Warning: Attempt to read property '1' on int in %s on line %d
+Warning: Attempt to read property "1" on int in %s on line %d
 NULL
 
 Warning: Undefined variable $c in %s on line %d
 
 Warning: Trying to access array offset on value of type null in %s on line %d
 
-Warning: Attempt to read property '1' on int in %s on line %d
+Warning: Attempt to read property "1" on int in %s on line %d
 
-Warning: Attempt to read property '' on null in %s on line %d
+Warning: Attempt to read property "" on null in %s on line %d
 NULL

Zend/tests/026.phpt

@@ -22,7 +22,7 @@ print "ok\n";
 
 ?>
 --EXPECTF--
-Warning: Attempt to read property 'a' on null in %s on line %d
+Warning: Attempt to read property "a" on null in %s on line %d
 ok
-Attempt to assign property 'a' on null
+Attempt to assign property "a" on null
 ok

Zend/tests/033.phpt

@@ -61,6 +61,6 @@ Warning: Trying to access array offset on value of type null in %s on line %d
 
 Warning: Trying to access array offset on value of type null in %s on line %d
 
-Warning: Attempt to read property 'foo' on null in %s on line %d
-Attempt to assign property 'foo' on null
-Attempt to assign property 'bar' on null
+Warning: Attempt to read property "foo" on null in %s on line %d
+Attempt to assign property "foo" on null
+Attempt to assign property "bar" on null

Zend/tests/access_modifiers_008.phpt

@@ -18,4 +18,4 @@ B2::test();
 
 ?>
 --EXPECTF--
-Fatal error: Call to protected method B1::f() from context 'B2' in %s on line %d
+Fatal error: Call to protected method B1::f() from context "B2" in %s on line %d

Zend/tests/access_modifiers_009.phpt

@@ -23,4 +23,4 @@ B2::test();
 --EXPECTF--
 bool(false)
 
-Fatal error: Call to protected method B1::f() from context 'B2' in %s on line %d
+Fatal error: Call to protected method B1::f() from context "B2" in %s on line %d

Zend/tests/access_modifiers_010.phpt

@@ -28,7 +28,7 @@ new c;
 
 ?>
 --EXPECTF--
-Fatal error: Uncaught Error: Call to private method d::test2() from context 'a' in %s:%d
+Fatal error: Uncaught Error: Call to private method d::test2() from context "a" in %s:%d
 Stack trace:
 #0 %s(%d): a->test()
 #1 %s(%d): c->__construct()

Zend/tests/array_unpack/classes.phpt

@@ -43,4 +43,4 @@ array(3) {
   [2]=>
   int(3)
 }
-Exception: Cannot declare self-referencing constant 'self::B'
+Exception: Cannot declare self-referencing constant self::B

Zend/tests/assign_dim_obj_null_return.phpt

@@ -79,5 +79,5 @@ Cannot add element to the array as the next element is already occupied
 Illegal offset type
 Illegal offset type
 Cannot use a scalar value as an array
-Attempt to assign property 'foo' on bool
-Attempt to assign property 'foo' on bool
+Attempt to assign property "foo" on bool
+Attempt to assign property "foo" on bool

Zend/tests/bug29015.phpt

@@ -15,7 +15,7 @@ object(stdClass)#1 (1) {
   string(10) "string('')"
 }
 
-Fatal error: Uncaught Error: Cannot access property started with '\0' in %s:%d
+Fatal error: Uncaught Error: Cannot access property starting with "\0" in %s:%d
 Stack trace:
 #0 {main}
   thrown in %s on line %d