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"?}

回复讨论(解决方案)

$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);