PHP 7 version has greatly improved performance. In some WordPress benchmark tests, the performance can reach 3 times that of PHP 5.6.
PHP7 is a major version of the PHP programming language and is billed as a revolution in developing web applications that can develop and deliver mobile enterprise and cloud applications. This version is considered the most important change in PHP since PHP5 was released in 2004. (Recommended learning: PHP video tutorial)
PHP7 is going to break everything. PHP developers should accept the law of breaking backward compatibility between versions. As long as extensive backward compatibility is not allowed, PHP7 will be a highly respected language.
PHP7 is the most anticipated and the main feature of PHP programming language. PHP7 was released on December 3, 2015, and was hailed as a revolution in developing and delivering web applications that move to the enterprise and the cloud.
In what aspects does php7 have performance improvements?
The structure that stores variables becomes smaller. Try to make the members of the structure share memory space and reduce references, which will occupy memory. Reduced, the speed of variable operation is improved.
Changes to the string structure. The string information and data itself were originally stored in two independent memory blocks. PHP7 tries to store them in the same memory block, which improves the CPU cache hit rate.
Changes in the array structure, array elements and hash mapping tables will be stored in multiple memory blocks in php5. php7 tries to allocate them in the same block of memory, reducing memory usage and improving the CPU cache hit rate. .
The function calling mechanism has been improved. By optimizing the parameter transfer link, some instruction operations have been reduced and execution efficiency has been improved.
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