php判断数组元素是否存在?

Question

php判断数组元素是否存在

Answer 1

in_array() 函数在数组中搜索给定的值。语法in_array(value,array,type)参数value &nbsp; &nbsp;必需。规定要在数组搜索的值。 &nbsp; &nbsp;array &nbsp; &nbsp;必需。规定要搜索的数组。 &nbsp; &nbsp;type &nbsp; &nbsp;可选。如果设置该参数为 true，则检查搜索的数据与数组的值的类型是否相同。如：<?php$people = array("Peter", "Joe", "Glenn", "Cleveland");if (in_array("Glenn",$people)) &nbsp;{ &nbsp;echo "Match found"; &nbsp;}else &nbsp;{ &nbsp;echo "Match not found"; &nbsp;}?>