php pass by value or reference

Which of the following is more efficient for passing PHP function parameters by value or by reference? Pass by value function abc($t){$c=$t;} Reference transfer function abc(&$t){$c=$t;} I assigned a long article to the variable $ t, and then

1. First to explain the noun.In the process of value passing (passl-by-value), the formal parameters of the called function are treated as local variables of the called function, that is, the memory space is opened up in the stack to hold the value

Php variable reference pass value detailed tutorial. The reference in PHP means that different names access the same variable content. the pointer is different from the pointer in C language. the pointer in C language stores the variable content in

In memory, the copy of the PHP simple variable is passed by value, and the copy of the array and object is passed by reference, which is implemented by reference.Simple variables and objects are well understood:PHP//copy of a simple variable$a= '

PHP reference (& amp;) usage details, php reference. PHP reference () usage details, php reference beginner php about reference official documentation: 1. what is reference: www. php. netmanualzhlanguage. references. whatare. php2. reference: http:

PHP references and PHP references. PHP reference details, PHP reference details reference what is referenced in PHP means that different names are used to access the same variable content. This is not like the pointer of C. Instead, the reference is

PHP reference in detail, PHP reference pass use, PHP reference method return, PHP reference analysis! PHP Reference (&) detailed2009-05-13 14:30PHP references (add & symbols before variables or functions, objects, etc.)The reference in PHP means:

PHP reference in detail, PHP reference pass use, PHP reference method return, PHP reference analysis! PHP Reference (&) detailed2009-05-13 14:30PHP references (add & symbols before variables or functions, objects, etc.)The reference in PHP means:

In-depth analysis of PHP references (& amp;), in-depth analysis of php references. In-depth analysis of PHP references (lt; php $ a, which means that $ a and $ B point to the same variable. Note: $ a and $ B are exactly the same here. this doesn't

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