php 引用 问题
function test() {
$a = 1;
$b = 2;
testa( 'testb', $a );
echo $a, $b;
}
function testa() {
$p = func_get_args();
$fun = $p[ 0 ];
$p1 = & $p[ 1 ]; // 如何将 $p[ 1 ] 用传址方式 传给 $p[ 0 ]
$fun( $p1 );
}
function testb( &$a, &$b ) {
$a = 'a';
$b = 'b';
}
test();
回复内容:
function test() {
$a = 1;
$b = 2;
testa( 'testb', $a );
echo $a, $b;
}
function testa() {
$p = func_get_args();
$fun = $p[ 0 ];
$p1 = & $p[ 1 ]; // 如何将 $p[ 1 ] 用传址方式 传给 $p[ 0 ]
$fun( $p1 );
}
function testb( &$a, &$b ) {
$a = 'a';
$b = 'b';
}
test();
我依然不是太明白你的表达 ...
如果你是想通过 func_get_args() 来获取一个参数变量的引用 ... 很遗憾 ... 你做不到 ...
不过我们可以用一些替代方案来完成 ... 没细去琢磨 ... 第一时间能想到的方法类似下面这样 ...
<?php function test() { /* make an object and forget about reference ... */ $sunyanzi = (object)[ 'a' => 1, 'b' => 2 ]; /* just call the function ... */ func_caller( 'callee', $sunyanzi ); /* is this the result you want ..? */ echo $sunyanzi->a, $sunyanzi->b; /* done ... */ return; } function func_caller() { /* you can not get reference via func_get_args() ... */ $args = func_get_args(); /* using the most normal way to call the function ... */ return $args[0]( $args[1] ); } function callee( $object ) { /* a different way to assign value ... */ $object->a = 'a'; $object->b = 'b'; /* actually i just replace "$" into "$object->" ... */ return; } /* here we go ... */ test();
不太喜欢你的代码风格所以小修改了一下 ... 但愿不会影响恩 ...
这种方式虽然可以实现 ... 但是从架构的角度讲不是太好 ...
因为在对象传递的过程中 ... 你无法取消这个引用 ... 所以尽量还是换一种程序结构吧 ...
恩 ... 就是这样啦 ... 希望我没误会你的意思 ...

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