What's new in PHP5.6.x, what's new in PHP5.6.x_PHP Tutorial
What’s new in PHP5.6.x, what’s new in PHP5.6.x
What’s new in PHP5.6.x
After the midterm exam, I checked php.net and found that it was updated again. . Now take a look at What's New in PHP 5.6.x
Internal-operator-overloading
Internal operator overloading comes first because it’s the funniest and weirdest one.
This time GMP objects (yes, that’s right, objects!!) support operator overloading and conversion to scalars
There is an example of overloading the gmp_* module
Reload previous
After reloading
In this example the + operator is overloaded as gmp_add and the * operator is overloaded as gmp_mull. The previous functional-based code made it impossible to show many algorithmic details, and it is easy to understand when it is changed to operator-based code.
Constant scalar expressions
In constants, property declarations and function parameter default value declarations, previous versions only allowed constant values. PHP5.6 began to allow the use of scalar expressions containing numbers, string literals and constants. This improvement. . I'm so happy.
In addition to the poor ONE, all other visual inspections were used.
Import functions and constants (use function and use const)
The use operator starts to support the import of functions and constants QwQ
Without further ado, here’s the code
The output of this code is
Have you seen the usage of use function and use const structures?
Parameter unpacking function (Argument unpacking via ...)
When calling a function, you can unpack the array or traversable object into the parameter list through the ... operator (operators like ellipses always feel uncomfortable...)
The output is just 6
New Global variables
Global variables have always been very important. Finally, let’s take a look at the new global variables
LDAP
- LDAP_ESCAPE_DN
- LDAP_ESCAPE_FILTER
OpenSSL
- OPENSSL_DEFAULT_STREAM_CIPHERS
- STREAM_CRYPTO_METHOD_ANY_CLIENT
- STREAM_CRYPTO_METHOD_ANY_SERVER
- STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT
- STREAM_CRYPTO_METHOD_TLSv1_0_SERVER
- STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT
- STREAM_CRYPTO_METHOD_TLSv1_1_SERVER
- STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT
- STREAM_CRYPTO_METHOD_TLSv1_2_SERVER
PostgreSQL
- PGSQL_CONNECT_ASYNC
- PGSQL_CONNECTION_AUTH_OK
- PGSQL_CONNECTION_AWAITING_RESPONSE
- PGSQL_CONNECTION_MADE
- PGSQL_CONNECTION_SETENV
- PGSQL_CONNECTION_SSL_STARTUP
- PGSQL_CONNECTION_STARTED
- PGSQL_DML_ESCAPE
- PGSQL_POLLING_ACTIVE
- PGSQL_POLLING_FAILED
- PGSQL_POLLING_OK
- PGSQL_POLLING_READING
- PGSQL_POLLING_WRITING
- PGSQL_CONNECTION_MADE
Attention
But because it is a new statement, many IDEs will. . .
Haha, look forward to the update
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