下面通过本文给大家分享PHP字符串替换str_replace()函数4种用法,具体内容如下所示:
mixed str_replace ( mixed $search , mixed $replace , mixed $subject [, int &$count ] )
该函数返回一个字符串或者数组。该字符串或数组是将subject中全部的search都被replace替换之后的结果。
1、$search,要替换的字符串,或数组
2、$replace,被用来替换的字符串或数组
3、$subject,被查询的字符串或数组
4、$count,可选,如果被指定,将为设置为替换的次数
5、返回值:该函数返回替换后的数组或者字符串(新生成的)
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<?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 );
?>
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总结
以上所述是小编给大家介绍的PHP字符串替换str_replace()函数四种用法,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持!
原文链接:http://www.cnblogs.com/jinsanguo/archive/2017/10/13/7661470.html