搜索阵列一个特定值后，怎么取代掉

程序员文章站 2022-06-08 08:55:15

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搜索阵列一个特定值后，如何取代掉?


$fruit = "banana";   
$fruits = array("apple","banana","orange");   
if( in_array($fruit,$fruits) ) {
       //符合条件
       //如何把$fruits的"banana"改成"pear"?
}

------解决思路----------------------

本帖最后由 xuzuning 于 2015-03-19 15:27:56 编辑

$fruit = "banana";   
$fruits = array("apple","banana","orange");   
if( in_array($fruit,$fruits) ) {
  $fruits[array_search($fruit, $fruits)] = "pear";
}
print_r($fruits);

Array
(
    [0] => apple
    [1] => pear
    [2] => orange
)

对于这种需求，一般就不必先用 in_array 检查了

$fruit = "banana";   
$fruits = array("apple","banana","orange");   
if(false !== ($t = array_search($fruit, $fruits)) ) {
  $fruits[$t] = "pear";
}
print_r($fruits);