Annotation of embedaddon/php/ext/standard/tests/general_functions/debug_zval_dump_v.phpt, revision 1.1.1.1
1.1 misho 1: --TEST--
2: Test debug_zval_dump() function : usage variations
3: --INI--
4: allow_call_time_pass_reference=1
5: --FILE--
6: <?php
7: /* Prototype: void debug_zval_dump ( mixed $variable );
8: Description: Dumps a string representation of an internal zend value
9: to output.
10: */
11:
12: echo "*** Testing debug_zval_dump() on functions ***\n";
13: echo "--- Variation 1: global variable inside a function ---\n";
14: $global_var = 10; //declaring global variable
15:
16: /* function to dump reference count of global variable,$global_var
17: and local variable,$local_var */
18: function dump_globalvar( &$local_var ) {
19: global $global_var;
20: echo "\n-- Value of local variable inside dump_globalvar() --\n";
21: debug_zval_dump( $local_var );
22: echo "\n-- Value of global variable inside dump_globalvar() --\n";
23: debug_zval_dump( $global_var );
24: }
25: /* dump value and reference count of $global_var using debug_zval_dump() */
26: echo "\n-- Value of global variable, before calling dump_globalvar() --\n";
27: debug_zval_dump( $global_var );
28:
29: /* calling function dump_globalvar() to check the reference count of local
30: and global variables inside the function */
31: dump_globalvar( $global_var );
32:
33: /* dump value and reference count of $global_var after exiting function
34: dump_globalvar();
35: expected: reference count of $global_var should remain the same as
36: before calling dump_globalvar() function */
37: echo "\n-- Value of global variable, after exiting dump_globalvar() --\n";
38: debug_zval_dump( $global_var );
39:
40: echo "\n--- Variation 2: one variable references another ---\n";
41: $first_var = 10;
42: /* dump value and reference count of $first_var */
43: echo "\n-- Value of \$first_var: --\n";
44: debug_zval_dump($first_var);
45:
46: /* $ref_first_var references $first_var */
47: $ref_first_var = &$var_1;
48:
49: echo "\n-- Value of \$ref_first_var --\n";
50: debug_zval_dump($ref_first_var);
51: echo "\n-- Value of \$first_var --\n";
52: debug_zval_dump($first_var);
53:
54: unset($ref_first_var);
55:
56: /* dump value and reference count of $first_var, $ref_first_var
57: here $ref_first_var is unset */
58: echo "\n-- Value of \$ref_first_var --\n";
59: debug_zval_dump($ref_first_var);
60: echo "\n-- Value of \$first_var --\n";
61: debug_zval_dump($first_var);
62:
63: echo "\n--- Variation 3: multiple references of variables ---\n";
64: $var_1 = 10;
65: $var_2 = &$var_1;
66: $var_3 = &$var_2;
67: echo "\n-- Value of \$var_1: (before referencing) --\n";
68: debug_zval_dump($var_1);
69: echo "\n-- Value of \$var_2: (referencing var_1) --\n";
70: debug_zval_dump($var_2);
71: echo "\n-- Value of \$var_3: (referencing var_2) --\n";
72: debug_zval_dump($var_3);
73:
74: /* unsetting $var_3 */
75: unset($var_3);
76: echo "\n-- Value of \$var_3: (after unsetting var_3) --\n";
77: debug_zval_dump($var_3);
78: echo "\n-- Value of \$var_2: --\n";
79: debug_zval_dump($var_2);
80: echo "\n-- Value of \$var_3: --\n";
81: debug_zval_dump($var_1);
82:
83: /* unsetting $var_1 */
84: unset($var_1);
85: echo "\n-- Value of \$var_1: (after unsetting variable_1) --\n";
86: debug_zval_dump($var_1);
87: echo "\n-- Value of \$var_2: --\n";
88: debug_zval_dump($var_2);
89:
90: echo "\n*** Testing debug_zval_dump() on miscelleneous input arguments ***\n";
91: /* unset a variable */
92: $unset_var = 10.5;
93: unset($unset_var);
94:
95: $misc_values = array (
96: /* nulls */
97: NULL,
98: null,
99:
100: /* unset variable */
101: @$unset_var,
102:
103: /* undefined variable */
104: @$undef_var,
105:
106: /* mixed types */
107: @TRUE123,
108: "123string",
109: "string123",
110: "NULLstring"
111: );
112: /* loop to display the variables and its reference count using
113: debug_zval_dump() */
114: $counter = 1;
115: foreach( $misc_values as $value ) {
116: echo "-- Iteration $counter --\n";
117: debug_zval_dump( $value );
118: debug_zval_dump( &$value );
119: $counter++;
120: }
121:
122: echo "Done\n";
123: ?>
124:
125: --EXPECTF--
126: *** Testing debug_zval_dump() on functions ***
127: --- Variation 1: global variable inside a function ---
128:
129: -- Value of global variable, before calling dump_globalvar() --
130: long(10) refcount(2)
131:
132: -- Value of local variable inside dump_globalvar() --
133: long(10) refcount(1)
134:
135: -- Value of global variable inside dump_globalvar() --
136: long(10) refcount(1)
137:
138: -- Value of global variable, after exiting dump_globalvar() --
139: long(10) refcount(2)
140:
141: --- Variation 2: one variable references another ---
142:
143: -- Value of $first_var: --
144: long(10) refcount(2)
145:
146: -- Value of $ref_first_var --
147: NULL refcount(1)
148:
149: -- Value of $first_var --
150: long(10) refcount(2)
151:
152: -- Value of $ref_first_var --
153:
154: Notice: Undefined variable: ref_first_var in %s on line %d
155: NULL refcount(1)
156:
157: -- Value of $first_var --
158: long(10) refcount(2)
159:
160: --- Variation 3: multiple references of variables ---
161:
162: -- Value of $var_1: (before referencing) --
163: long(10) refcount(1)
164:
165: -- Value of $var_2: (referencing var_1) --
166: long(10) refcount(1)
167:
168: -- Value of $var_3: (referencing var_2) --
169: long(10) refcount(1)
170:
171: -- Value of $var_3: (after unsetting var_3) --
172:
173: Notice: Undefined variable: var_3 in %s on line %d
174: NULL refcount(1)
175:
176: -- Value of $var_2: --
177: long(10) refcount(1)
178:
179: -- Value of $var_3: --
180: long(10) refcount(1)
181:
182: -- Value of $var_1: (after unsetting variable_1) --
183:
184: Notice: Undefined variable: var_1 in %s on line %d
185: NULL refcount(1)
186:
187: -- Value of $var_2: --
188: long(10) refcount(2)
189:
190: *** Testing debug_zval_dump() on miscelleneous input arguments ***
191: -- Iteration 1 --
192: NULL refcount(3)
193: &NULL refcount(2)
194: -- Iteration 2 --
195: NULL refcount(3)
196: &NULL refcount(2)
197: -- Iteration 3 --
198: NULL refcount(1)
199: &NULL refcount(2)
200: -- Iteration 4 --
201: NULL refcount(1)
202: &NULL refcount(2)
203: -- Iteration 5 --
204: string(7) "TRUE123" refcount(3)
205: &string(7) "TRUE123" refcount(2)
206: -- Iteration 6 --
207: string(9) "123string" refcount(3)
208: &string(9) "123string" refcount(2)
209: -- Iteration 7 --
210: string(9) "string123" refcount(3)
211: &string(9) "string123" refcount(2)
212: -- Iteration 8 --
213: string(10) "NULLstring" refcount(3)
214: &string(10) "NULLstring" refcount(2)
215: Done
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