<pre><?php
$var1 = 'ccc';
$var2 = 'ccc';
echo "separate variables\n";
debug_zval_dump($var1, $var2);
echo "Copying variable just adds references to the same value\n";
$copy = $var1;
debug_zval_dump($var1, $copy);
echo "Using a reference adds references to the same value \n";
$reference =& $var2;
debug_zval_dump(&$var2, &$reference);
echo "Using a copy and a reference of the same value actually creates a clone \n";
$reference2 =& $var1;
debug_zval_dump(&$var1, $copy, &$reference2);
Fatal error: Call-time pass-by-reference has been removed in /in/i0gvC on line 15
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Deprecated: Call-time pass-by-reference has been deprecated in /in/i0gvC on line 15
Deprecated: Call-time pass-by-reference has been deprecated in /in/i0gvC on line 15
Deprecated: Call-time pass-by-reference has been deprecated in /in/i0gvC on line 19
Deprecated: Call-time pass-by-reference has been deprecated in /in/i0gvC on line 19
<pre>separate variables
string(3) "ccc" refcount(2)
string(3) "ccc" refcount(2)
Copying variable just adds references to the same value
string(3) "ccc" refcount(4)
string(3) "ccc" refcount(4)
Using a reference adds references to the same value
&string(3) "ccc" refcount(4)
&string(3) "ccc" refcount(4)
Using a copy and a reference of the same value actually creates a clone
&string(3) "ccc" refcount(4)
string(3) "ccc" refcount(2)
&string(3) "ccc" refcount(4)
Output for 5.2.7 - 5.2.17
Warning: Call-time pass-by-reference has been deprecated in /in/i0gvC on line 15
Warning: Call-time pass-by-reference has been deprecated in /in/i0gvC on line 15
Warning: Call-time pass-by-reference has been deprecated in /in/i0gvC on line 19
Warning: Call-time pass-by-reference has been deprecated in /in/i0gvC on line 19
<pre>separate variables
string(3) "ccc" refcount(2)
string(3) "ccc" refcount(2)
Copying variable just adds references to the same value
string(3) "ccc" refcount(4)
string(3) "ccc" refcount(4)
Using a reference adds references to the same value
&string(3) "ccc" refcount(4)
&string(3) "ccc" refcount(4)
Using a copy and a reference of the same value actually creates a clone
&string(3) "ccc" refcount(4)
string(3) "ccc" refcount(2)
&string(3) "ccc" refcount(4)
Output for 5.2.5 - 5.2.6
Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of debug_zval_dump(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file in /in/i0gvC on line 15
Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of debug_zval_dump(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file in /in/i0gvC on line 15
Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of debug_zval_dump(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file in /in/i0gvC on line 19
Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of debug_zval_dump(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file in /in/i0gvC on line 19
<pre>separate variables
string(3) "ccc" refcount(2)
string(3) "ccc" refcount(2)
Copying variable just adds references to the same value
string(3) "ccc" refcount(4)
string(3) "ccc" refcount(4)
Using a reference adds references to the same value
&string(3) "ccc" refcount(4)
&string(3) "ccc" refcount(4)
Using a copy and a reference of the same value actually creates a clone
&string(3) "ccc" refcount(4)
string(3) "ccc" refcount(2)
&string(3) "ccc" refcount(4)
Output for 5.2.1 - 5.2.4
Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of debug_zval_dump(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. in /in/i0gvC on line 15
Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of debug_zval_dump(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. in /in/i0gvC on line 15
Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of debug_zval_dump(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. in /in/i0gvC on line 19
Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of debug_zval_dump(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. in /in/i0gvC on line 19
<pre>separate variables
string(3) "ccc" refcount(2)
string(3) "ccc" refcount(2)
Copying variable just adds references to the same value
string(3) "ccc" refcount(4)
string(3) "ccc" refcount(4)
Using a reference adds references to the same value
&string(3) "ccc" refcount(4)
&string(3) "ccc" refcount(4)
Using a copy and a reference of the same value actually creates a clone
&string(3) "ccc" refcount(4)
string(3) "ccc" refcount(2)
&string(3) "ccc" refcount(4)
Warning: Call-time pass-by-reference has been deprecated - argument passed by value; If you would like to pass it by reference, modify the declaration of debug_zval_dump(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. However, future versions may not support this any longer. in /in/i0gvC on line 15
Warning: Call-time pass-by-reference has been deprecated - argument passed by value; If you would like to pass it by reference, modify the declaration of debug_zval_dump(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. However, future versions may not support this any longer. in /in/i0gvC on line 15
Warning: Call-time pass-by-reference has been deprecated - argument passed by value; If you would like to pass it by reference, modify the declaration of debug_zval_dump(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. However, future versions may not support this any longer. in /in/i0gvC on line 19
Warning: Call-time pass-by-reference has been deprecated - argument passed by value; If you would like to pass it by reference, modify the declaration of debug_zval_dump(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. However, future versions may not support this any longer. in /in/i0gvC on line 19
<pre>separate variables
string(3) "ccc" refcount(2)
string(3) "ccc" refcount(2)
Copying variable just adds references to the same value
string(3) "ccc" refcount(4)
string(3) "ccc" refcount(4)
Using a reference adds references to the same value
&string(3) "ccc" refcount(4)
&string(3) "ccc" refcount(4)
Using a copy and a reference of the same value actually creates a clone
&string(3) "ccc" refcount(4)
string(3) "ccc" refcount(2)
&string(3) "ccc" refcount(4)