搜索阵列一个特定值后，如何取代掉?

[crazyday7]

$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"?
}

[xuzuning]

$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);