PHP development tips for improving performance

PHP development tips for improving performance 1. use commas to connect strings instead of periods

Echo "aaa". "bbb"

Echo "aaa", "bbb ";

2. double quotation marks are used when a string contains a variable.

3. require is faster than require_once

4. calculate the cycle length in advance

 

5. use the foreache loop instead of the while active for loop (execution speed: foreache

  

  
6. for file access, use file_get_contents () to read the file. PHP provides four methods to read data from a file: fread (), file_get_contents (), file (), and readfile (). Fread (), file_get_contents (), and readfile () return data in the form of strings. file () returns the data in the file as an array. Only file_get_contents () caches files to the memory for faster read/write operations. this method is called memory ING.