详解PHP字符串替换str_replace()函数四种用法

php;"><?php  //实例一：字符串替换字符串  $str1 = str_replace("red","black","red green yellow pink purple");  echo $str1."";  //输出结果为black green yellow pink purple?><?php  //实例二：字符串替换数组键值  $arr = array("blue","red","green","yellow");  $str1 = str_replace("red","pink",$arr,$i);  print_r($str1);?><?php  //实例三：数组替换数组，映射替换  $arr1 = array("banana","orange");  $arr2 = array("pitaya","tomato");  $con_arr = array("apple","orange","banana","grape");  $con_rep = str_replace($arr1,$arr2,$con_arr,$count);  print_r($con_rep);?><?php  //实例四：如$search为数组，$replace为字符串时  $search = array("banana","grape");  $replace = "tomato";  $arr = array("banana","apple","orange","grape");  $new_arr = str_replace($search,$replace,$arr,$count);  print_r($new_arr);?>