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spser
Joined: 29 Aug 2016
Posts: 97
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 Posted: Mon 07 Dec '20 6:34 Post subject: PHP8 Too many warnings, how to distinguish |
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Countless _GET['**'] _POST['**'] calls, warnings pop up. Now you need to close the warning report to run, but some warning reports are indispensable.
How should I be compatible?
"A number of notices have been converted into warnings:
Attempting to read an undefined variable.
Attempting to read an undefined property.
Attempting to read an undefined array key.
Attempting to read a property of a non-object.
Attempting to access an array index of a non-array.
Attempting to convert an array to string.
Attempting to use a resource as an array key.
Attempting to use null, a boolean, or a float as a string offset.
Attempting to read an out-of-bounds string offset.
Attempting to assign an empty string to a string offset.
Attempting to assign multiple bytes to a string offset will now emit a warning." |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7442
Location: EU, Germany, Next to Hamburg
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| Posted: Mon 07 Dec '20 15:47 Post subject: |
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The true way would be to check of that variable index is available.
e.g.
| Code: |
if (isset($_POST['x']) {
//...
}
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Thad bad and ugly way is to change the error level in php.ini, since it is now E_ALL by default. PHP 7.x it was E_ALL & ~E_NOTICE |
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spser
Joined: 29 Aug 2016
Posts: 97
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| Posted: Fri 11 Dec '20 10:38 Post subject: |
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Too many places are written as if(POST[xx]), it is very difficult to change.
Also don't want to turn off the warning prompt... |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7442
Location: EU, Germany, Next to Hamburg
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| Posted: Fri 11 Dec '20 15:06 Post subject: |
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| Quote: | | Also don't want to turn off the warning prompt... |
What are you talking about? |
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spser
Joined: 29 Aug 2016
Posts: 97
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| Posted: Thu 24 Dec '20 8:44 Post subject: |
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| James Blond wrote: | | Quote: | | Also don't want to turn off the warning prompt... |
What are you talking about? |
| Code: |
php 5 / php 7
echo $arr['user'][$userid][$this->age]; // return null
php 8
echo $arr['user'][$userid][$this->age]; // Warning: Undefined variable ***
// How to write so as not to make mistakes??
if( isset($arr) && isset($arr['user']) && isset($userid) && isset($this->age) && isset($arr['user'][$userid])..... )
Unrestricted isset?
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7442
Location: EU, Germany, Next to Hamburg
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| Posted: Mon 28 Dec '20 23:43 Post subject: |
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| spser wrote: |
| Code: |
php 5 / php 7
echo $arr['user'][$userid][$this->age]; // return null
php 8
echo $arr['user'][$userid][$this->age]; // Warning: Undefined variable ***
// How to write so as not to make mistakes??
if( isset($arr) && isset($arr['user']) && isset($userid) && isset($this->age) && isset($arr['user'][$userid])..... )
Unrestricted isset?
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For the Pointer you can the PHP 8 new feature https://wiki.php.net/rfc/nullsafe_operator
I don't know if that works for array, too. PHP 8 is fairly new. |
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spser
Joined: 29 Aug 2016
Posts: 97
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| Posted: Tue 05 Jan '21 7:49 Post subject: |
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| James Blond wrote: | | spser wrote: |
| Code: |
php 5 / php 7
echo $arr['user'][$userid][$this->age]; // return null
php 8
echo $arr['user'][$userid][$this->age]; // Warning: Undefined variable ***
// How to write so as not to make mistakes??
if( isset($arr) && isset($arr['user']) && isset($userid) && isset($this->age) && isset($arr['user'][$userid])..... )
Unrestricted isset?
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For the Pointer you can the PHP 8 new feature https://wiki.php.net/rfc/nullsafe_operator
I don't know if that works for array, too. PHP 8 is fairly new. |
| Code: | $arr = array();
echo $arr['bb']?['dd']; // Parse error: syntax error, unexpected token ";"
echo $arr['bb'?]['dd']; // Parse error: syntax error, unexpected token "]"
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don't works.... help. |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7442
Location: EU, Germany, Next to Hamburg
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| Posted: Tue 05 Jan '21 16:28 Post subject: |
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| Well then you have to use the isset function |
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spser
Joined: 29 Aug 2016
Posts: 97
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| Posted: Wed 06 Jan '21 8:39 Post subject: |
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| James Blond wrote: | | Well then you have to use the isset function |
Isset has to be used many, many times, and even the judgment is incomplete.
Not the best way. |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7442
Location: EU, Germany, Next to Hamburg
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| Posted: Wed 06 Jan '21 9:42 Post subject: |
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it seems your code is not PHP 8 ready.
You could change the error level in php.ini to
That doesn't improve the code, but it will hide the notice errors. |
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spser
Joined: 29 Aug 2016
Posts: 97
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| Posted: Thu 07 Jan '21 8:44 Post subject: |
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| James Blond wrote: | it seems your code is not PHP 8 ready.
You could change the error level in php.ini to
That doesn't improve the code, but it will hide the notice errors. |
php8 returns a warning, not a prompt E_NOTICE |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7442
Location: EU, Germany, Next to Hamburg
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| Posted: Thu 07 Jan '21 9:35 Post subject: |
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| spser wrote: |
php8 returns a warning, not a prompt E_NOTICE |
RTFM? [1] Sure you can turn of Warnings, too. However, I don't recommend running your code with PHP 8. Is there a specific reason you need PHP 8?
[1] https://www.php.net/manual/en/function.error-reporting |
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spser
Joined: 29 Aug 2016
Posts: 97
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| Posted: Fri 08 Jan '21 10:09 Post subject: |
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| James Blond wrote: | | spser wrote: |
php8 returns a warning, not a prompt E_NOTICE |
RTFM? [1] Sure you can turn of Warnings, too. However, I don't recommend running your code with PHP 8. Is there a specific reason you need PHP 8?
[1] https://www.php.net/manual/en/function.error-reporting |
Early technical test, operation and maintenance may upgrade php8 |
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