PHP value assignment and address assignment usage example analysis_PHP tutorial

Analysis of usage examples of PHP assignment by value and assignment by address

This article explains the usage of PHP assignment by value and assignment by address. Share it with everyone for your reference. The details are as follows:

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$name = 'Simon'; //对变量$name进行赋值（传值赋值） $name_b = $name; //对变量$name_b进行赋值（传值赋值） $addr = &$name; //对变量$addr进行赋值（传地址赋值） $name = "Elaine"; //改变$name的值 echo $name; //输出$name，会发现$name的值发生了变化 echo $name_b; //输出$name_b，会发现$name_b的值没有发生变化 echo $addr; //输出$addr，会发现$addr的值发生了变化 $addr = "Helen"; //改变$addr的值 echo $name; //输出$name，会发现$name的值发生了变化 echo $addr; //输出$addr，会发现$addr的值发生了变化 ?>

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<🎜>$name = 'Simon'; //Assign a value to the variable $name (assignment by value)<🎜> <🎜>$name_b = $name; //Assign a value to variable $name_b (assignment by value)<🎜> <🎜>$addr = &$name; //Assign value to variable $addr (pass address assignment)<🎜> <🎜>$name = "Elaine"; //Change the value of $name<🎜> <🎜>echo $name; //Output $name, you will find that the value of $name has changed<🎜> <🎜>echo $name_b; //Output $name_b, you will find that the value of $name_b has not changed<🎜> <🎜>echo $addr; //Output $addr, you will find that the value of $addr has changed<🎜> <🎜>$addr = "Helen"; //Change the value of $addr<🎜> <🎜>echo $name; //Output $name, you will find that the value of $name has changed<🎜> <🎜>echo $addr; //Output $addr, you will find that the value of $addr has changed<🎜> <🎜>?>

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