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From PHP Tutorial
What should I do if the mail f...
The mail function in php is a built-in function for sending emails, but if you really want to use th...
Detailed explanation of usage ...
1. Introduction to the mail() function, you can use this function to send emails. Requirements In or...
Detailed explanation of new sc...
1. ?? operator (NULL coalescing operator) $a = $_GET['a'] ?? 1; It is equivalent to: $a = empty($_GE...
Detailed explanation of simple...
Test version: old version PHP 5.5.29, new version PHP 7.0.0 Test method: class PerformanceTest { pri...
Detailed explanation of incomp...
Incompatibility 1. foreach no longer changes the internal array pointer. Before PHP7, when the array...
Introducing updates on how to ...
The return value of the generator The concept of generator was introduced in PHP5.5. Each time the g...
Summary of some new features i...
If you are using a framework based on composer and PSR-4, can this method of writing successfully lo...
Summary of 5 php7 performance ...
PHP7 has been released. As the largest version upgrade and performance upgrade of PHP in 10 years, P...
From HTML Tutorial
The difference between frame a...
1. Frame cannot be used independently of frameSet, iframe can; 2. Frame cannot be placed in body; it...
Introduction to new features s...
Use the ... operator to define variable-length parameter functions (PHP 5 >= 5.6.0, PHP 7) You ca...
