php-7.4

问题 i cannot install php-devel, when i enter: yum install php-devel Resolving Dependencies --> Running transaction check ---> Package php-devel.x86_64 0:7.4.0-1.el7.remi will be installed --> Processing Dependency: php-cli(x86-64) = 7.4.0-1.el7.remi for package: php-devel-7.4.0-1.el7.remi.x86_64 --> Finished Dependency Resolution Error: Package: php-devel-7.4.0-1.el7.remi.x86_64 (remi-php74) Requires: php-cli(x86-64) = 7.4.0-1.el7.remi Installed: php-cli-7.4.1~RC1-1.el7.remi.x86_64 (@remi-modular

问题 I've just seen a video about upcoming PHP 7.4 features and saw this ??= new operator. I already know the ?? operator. How's this different? 回答1: From the docs: Coalesce equal or ??=operator is an assignment operator. If the left parameter is null, assigns the value of the right paramater to the left one. If the value is not null, nothing is made. Example: // The folloving lines are doing the same $this->request->data['comments']['user_id'] = $this->request->data['comments']['user_id'] ??

问题 I've just seen a video about upcoming PHP 7.4 features and saw this ??= new operator. I already know the ?? operator. How's this different? 回答1: From the docs: Coalesce equal or ??=operator is an assignment operator. If the left parameter is null, assigns the value of the right paramater to the left one. If the value is not null, nothing is made. Example: // The folloving lines are doing the same $this->request->data['comments']['user_id'] = $this->request->data['comments']['user_id'] ??

问题 The official documentation page for PDO DSN does not list out username or password yet. What is the correct name for these key-value pairs? 回答1: Looks like the documentation hasn't been updated yet, but this is the related change from PHP's source repository, stating how it should be used: PDO: The username and password can now be specified as part of the PDO DSN for the mysql, mssql, sybase, dblib, firebird and oci drivers. Previously this was only supported by the pgsql driver. If a

问题 The official documentation page for PDO DSN does not list out username or password yet. What is the correct name for these key-value pairs? 回答1: Looks like the documentation hasn't been updated yet, but this is the related change from PHP's source repository, stating how it should be used: PDO: The username and password can now be specified as part of the PDO DSN for the mysql, mssql, sybase, dblib, firebird and oci drivers. Previously this was only supported by the pgsql driver. If a

问题 There is the following anonymous recursive function: $f = function($n) use (&$f) { return ($n == 1) ? 1 : $n * $f($n - 1); }; echo $f(5); // 120 I try to rewrite to version 7.4, but there is an error, please tell me what I'm missing? $f = fn($n) => ($n == 1) ? 1 : $n * $f($n - 1); echo $f(5); Notice: Undefined variable: f Fatal error: Uncaught Error: Function name must be a string 回答1: Just like Barmar said, you can't use $f from the outside scope, because when the implicit binding takes

问题 This question already has answers here : Reference - What does this error mean in PHP? (36 answers) Closed last month . I've just updated my php version to 7.4, and i noticed this error pops up: Array and string offset access syntax with curly braces is deprecated here is part of my code which is triggering the above error: public function getRecordID(string $zoneID, string $type = '', string $name = ''): string { $records = $this->listRecords($zoneID, $type, $name); if (isset($records-

问题 When I tried upgrading from PHP 7.3 to PHP 7.4, I received this error: Unexpected server response while doing caching_sha2 auth 109 As I see it, this indicates that PHP 7.4 MySQLi is trying to use the caching_sha2_password plugin. This article points out that PHP MySQLi does not support the plugin (it also hints future support for it), but since PHP 7.4 is new and seems to be trying to use it, I guess it should work. Also the error message is different, than if it wasn't supported ( access

问题 Migrating from php 7.1 to 7.4. We have like 500 functional tests for an API, and some of them started to fail with an error after the migration was complete. These tests were passing before everywhere, and now fail everywhere - not all, just 39. Environment information: php 7.4 codeception yii2 Stack trace: ...\api\vendor\codeception\codeception\src\Codeception\Subscriber\ErrorHandler.php:83 ...\api\tests\functional\SomeFileHereCest.php:72 ...\api\vendor\codeception\codeception\src

问题 I have updated my class definitions to make use of the newly introduced property type hints, like this: class Foo { private int $id; private ?string $val; private DateTimeInterface $createdAt; private ?DateTimeInterface $updatedAt; public function __construct(int $id) { $this->id = $id; } public function getId(): int { return $this->id; } public function getVal(): ?string { return $this->val; } public function getCreatedAt(): ?DateTimeInterface { return $this->createdAt; } public function