php使用替換字符串函數(shù)的方法：1、【$search】要替換的字符串，或數(shù)組；2、【$replace】被用來替換的字符串或數(shù)組；3、【$subject】被查詢的字符串或數(shù)組；4、【$count】可選，如果被指定，將為設(shè)置為替換的次數(shù)。
php使用替換字符串函數(shù)的方法：
php字符串替換str_replace()函數(shù)4種用法，具體內(nèi)容如下所示：
mixed str_replace ( mixed $search , mixed $replace , mixed $subject [, int &$count ] )該函數(shù)返回一個(gè)字符串或者數(shù)組。該字符串或數(shù)組是將subject中全部的search都被replace替換之后的結(jié)果。
1、$search,要替換的字符串，或數(shù)組
2、$replace,被用來替換的字符串或數(shù)組
3、$subject,被查詢的字符串或數(shù)組
4、$count，可選，如果被指定，將為設(shè)置為替換的次數(shù)
5、返回值：該函數(shù)返回替換后的數(shù)組或者字符串(新生成的)
<?php //實(shí)例一：字符串替換字符串 $str1 = str_replace("red","black","red green yellow pink purple"); echo $str1.""; //輸出結(jié)果為black green yellow pink purple?><?php //實(shí)例二：字符串替換數(shù)組鍵值 $arr = array("blue","red","green","yellow"); $str1 = str_replace("red","pink",$arr,$i); print_r($str1);?><?php //實(shí)例三：數(shù)組替換數(shù)組，映射替換 $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 //實(shí)例四：如$search為數(shù)組，$replace為字符串時(shí) $search = array("banana","grape"); $replace = "tomato"; $arr = array("banana","apple","orange","grape"); $new_arr = str_replace($search,$replace,$arr,$count); print_r($new_arr);?>相關(guān)學(xué)習(xí)推薦：php編程（視頻）