Numeric values of error reporting levels

Question

I'm checking the configuration of my PHP server and I need to set the following parameter as follows:

error_reporting set to E_ALL & ~E_NOTICE

However on my server a numeric value is set:

error_reporting 6135 6135

I was wondering what's the meaning of it, and if I really need to change it

thanks

Either none of this makes any sense at all, or it's time for me to go to bed. — JAL, Sep 21 '10 at 08:15

score 17 · Answer 1 · answered Sep 21 '10 at 08:18

17

Values used for error reporting

 E_RECOVERABLE_ERROR  4096 +
E_USER_NOTICE        1024 +
E_USER_WARNING        512 +
E_USER_ERROR          256 +
E_COMPILE_WARNING     128 +
E_COMPILE_ERROR        64 +
E_CORE_WARNING         32 +
E_CORE_ERROR           16 +
E_PARSE                 4 +
E_WARNING               2 +
E_ERROR                 1 +
                   = 6135

answered Sep 21 '10 at 08:18

Mark Baker

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Exactly what I was looking for, (of course) I couldn't find them in the php.net docs. Cheers! – Chris Woods Feb 07 '13 at 23:18
nice to have this one when seeing something like `error_reporting(7)` – JSmyth Sep 10 '16 at 02:55

score 12 · Accepted Answer · answered Sep 21 '10 at 08:20

From the page we have:

E_ALL has the value 30719 in PHP 5.3.x, 6143 in PHP 5.2.x, 2047 previously
E_NOTICE has the value 8

Looks like you are using PHP 5.2.x

Now If you do E_ALL & ~E_NOTICE Which is bitwise complement of E_NOTICE followed by bitwise anding with E_ALL we get

6143 & (~8) = 6135

Raoul Duke · Answer 3 · 2010-09-21T08:48:27.803

7

The error flags are power of 2 integers so you can combine them using bit operators. The result is an integer like the one you see so if you set it to E_ALL & ~E_NOTICE it will still end up as integer. What flags comprise the 6135 value depends on your php version. You can check if a flag is contained within it using the bitwise and operator, e.g.

if ((error_reporting() & E_NOTICE) == E_NOTICE) {
    echo "E_NOTICE is active";
}

edited Sep 21 '10 at 08:48

answered Sep 21 '10 at 08:17

Raoul Duke

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`error_reporting() & E_NOTICE == 0` is wrong. First of all, `==` has a higher precedence than `&` so that `error_reporting() & E_NOTICE == 0` is equivalent to `error_reporting() & (E_NOTICE == 0)`. Furthermore, even if you would use `(error_reporting() & E_NOTICE) == 0`, it means that the expression is true if the return value of `error_reporting()` and the value of `E_NOTICE` have no bits in common. – Gumbo Sep 21 '10 at 08:35
ah yes. my bad. should be (error_reporting() & E_NOTICE) == E_NOTICE . thx and fixed – Raoul Duke Sep 21 '10 at 08:47

score 3 · Answer 4 · answered Sep 21 '10 at 08:19

foreach(
    array('E_ALL', 'E_NOTICE', '~E_NOTICE', 'E_ALL&~E_NOTICE') 
    as $s) {
    eval("\$v=$s;");
    printf("%20s = dec %10u = bin %32b\n", $s, $v, $v);
}

result

           E_ALL = dec       6143 = bin                    1011111111111
        E_NOTICE = dec          8 = bin                             1000
       ~E_NOTICE = dec 4294967287 = bin 11111111111111111111111111110111
 E_ALL&~E_NOTICE = dec       6135 = bin                    1011111110111

score 1 · Answer 5 · answered Sep 21 '10 at 08:55

1

Note, that error_reporting(-1); will report all and any PHP errors.

answered Sep 21 '10 at 08:55

raveren

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score 0 · Answer 6 · answered Jul 29 '13 at 07:56

error_reporting 6135 will not log Runtime Notices, So better to use

error_reporting(E_ALL);

followed by

ini_set('display_errors', '0');

This will log all errors including Runtime notices, But pevent displaying in browser. This can be used in any PHP versions.

Numeric values of error reporting levels

6 Answers6

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