tpunt/php7-reference

An overview of the features, changes, and backward compatibility breakages in PHP 7

php7-reference's Issues

Context Sensitive Lexer

Another change for PHP 7: https://wiki.php.net/rfc/context_sensitive_lexer

:)

'string'->toUpper() example in README.md

Unless I am mistaken (which is entirely likely) strings aren't objects in PHP, so one cannot call methods on them, let along calling method on literal strings.

The changes to the parser might allow this to work if strings were objects, but they aren't so it doesn't.

I actually can't think of a literal->method() call which would work in PHP?

(an otherwise great doc btw, which I refer to constantly during my testing)

Clarity for Backward Compatibility and Enhancement Changes

There have been various misunderstanding of the section Changes and how it relates to Backward Compatibility (BC) changes on PHP7 related forums. Could you please, see how you can make a distinction -- maybe via a separate section specifically for possible BC changes. This will be very helpful for reference purpose.

Redefinition of parameters

Hi Thomas,

I think you missed to talk about the redefinition of parameter not possible with the new engine .

Example:

function foo($a, $a) {}
// Fatal error: Redefinition of parameter $a in

For more information about it, you can check this article https://wiki.php.net/phpng in the incompatibilities section.

Thanks for your work !

list() function changes

Hi @tpunt
I was trying out the examples for the list() function and I was getting different results for

$a = [1, 2];
list($a, $b) = $a;

// PHP <7 : $a = 1, $b = 2
// PHP 7: $a = 1, $b = null + "Undefined index 1"

$b = [1, 2];
list($a, $b) = $b;

// PHP <7 : $a = null + "Undefined index 0", $b = 2
// PHP 7: $a = 1, $b = 2

In my case I got

$a = [1, 2];
list($a, $b) = $a;

// PHP <7 : $a = 1, $b = 2
// PHP 7: $a = 1, $b = 2

$b = [1, 2];
list($a, $b) = $b;

// PHP <7: $a = null, $b = 2
// PHP 7: $a = 1, $b = 2

After checking the php versions and trying to understand why I got those different values, I found that in the documentation it's stated Modification of the array during list() execution (e.g. using list($a, $b) = $b) results in undefined behavior.

Given this discrepancies I've open a bug on php.net and they are looking into it. I've also done some modifications and I will open a PR as soon as the matter is cleared :)

PHP 7.3 reference

Document substr() now returning an empty string instead of FALSE when the truncation happens on boundaries

This is not a minor bc break, many libs/frameworks use false !== substr() in practice see
https://github.com/php/php-src/blob/php-7.0.0RC6/UPGRADING#L430

Document newly added errors

Document newly added errors: php/php-src@e8f992c

• ArithmeticError
• DivisionByZeroError

PHP7 released!

PHP 7 is set to be released on December 3rd, 2015.

Shouldn't this be modified?

php5 to php7 error

Hİ ı want to ask question with a another project.

my project php5 and I want to upgrade this project to php7. BUT I get a lot of bugs.

Notice: Undefined index: aranan in C:\xampp\htdocs\nesciences\content.php on line 60

Notice: Undefined variable: role_number in C:\xampp\htdocs\nesciences\user\edit_role.php on line 4

Warning: mysqli_fetch_object() expects parameter 1 to be mysqli_result, bool given in C:\xampp\htdocs\nesciences\user\add_revision_page.php on line 5

Fatal error: Uncaught Error: Call to undefined function yetki_kontrol() in C:\xampp\htdocs\nesciences\user\edit_role.php:3 Stack trace: #0 {main} thrown in C:\xampp\htdocs\nesciences\user\edit_role.php on line 3

here some bugs how can ı fixed this error.

CURL_PUST_OK - typo in the constant name

Hi,

There is the constant CURL_PUSH_OK is written as CURL_PUST_OK. Would be great if changed.