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定义和用法
list() 函数用数组中的元素为一组变量赋值。 注意,与 array() 类似,list() 实际上是一种语言结构,不是函数。 语法 list(var1,var2...) 参数 描述 var1 必需。第一个需要赋值的变量。 var2 可选。可以有多个变量。 提示和注释 注释:该函数只用于数字索引的数组,且假定数字索引从 0 开始。 例子 1 <?php $my_array = array("Dog","Cat","Horse"); list($a, $b, $c) = $my_array; echo "I have several animals, a $a, a $b and a $c."; ?> 输出: I have several animals, a Dog, a Cat and a Horse. 例子 2 <?php $my_array = array("Dog","Cat","Horse"); list($a, , $c) = $my_array; echo "Here I only use the $a and $c variables."; ?> 输出: Here I only use the Dog and Horse variables. |
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