About the new features of PHP5.6.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 the 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.

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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)

use operator starts to support the import of functions and constants QwQ

Without further ado, let’s get into the code

The output of this code is

Have you seen the usage of use function and use const structures?

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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 (the operator with the same ellipsis always feels uncomfortable...)

This output is just 6

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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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The above introduces the new features of PHP5.6.x, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.