发现自己用的语言与开发平台够多的。。
C -> VBScript -> C++ -> C# -> C++ -> Ruby -> PHP
这个帖子积累些PHP知识吧。
先是基础的输出:
1 echo(): 这个不是函数,是php语句,输出一个变量到终端,语句没有返回值,但函数可以有返回值。
2 print(): 可以打印出简单类型变量的值
3 print_r(): 可以打印出复杂类型变量的值,比如Array,Object等

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TomakePHPapplicationsfaster,followthesesteps:1)UseOpcodeCachinglikeOPcachetostoreprecompiledscriptbytecode.2)MinimizeDatabaseQueriesbyusingquerycachingandefficientindexing.3)LeveragePHP7 Featuresforbettercodeefficiency.4)ImplementCachingStrategiessuc

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Dependency injection (DI) significantly improves the testability of PHP code by explicitly transitive dependencies. 1) DI decoupling classes and specific implementations make testing and maintenance more flexible. 2) Among the three types, the constructor injects explicit expression dependencies to keep the state consistent. 3) Use DI containers to manage complex dependencies to improve code quality and development efficiency.

DatabasequeryoptimizationinPHPinvolvesseveralstrategiestoenhanceperformance.1)Selectonlynecessarycolumnstoreducedatatransfer.2)Useindexingtospeedupdataretrieval.3)Implementquerycachingtostoreresultsoffrequentqueries.4)Utilizepreparedstatementsforeffi


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