php数组一对一替换实现代码_PHP教程

WBOY
Release: 2016-07-21 15:16:21
Original
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复制代码代码如下:

header("Content-type: text/html; charset=utf-8");
function multiple_replace_words($word,$replace,$string,$tmp_match='#a_a#'){
preg_match_all('/'.$word.'/',$string,$matches); //匹配所有关键词
$search = explode(',','/'.implode('/,/',$matches[0]).'/');
//不存在匹配关键词
if(empty($matches[0])) return false;
//特殊替换设置
$count = count($matches[0]);
foreach($replace as $key=>$val){
if(!isset($matches[0][$key])) unset($replace[$key]); //剔除越界替换
}
//合并特殊替换数组与匹配数组
for($i=0;$i$matches[0][$i] = isset($replace[$i])? $replace[$i] : $matches[0][$i];
}
$replace = $matches[0];
//防止替换循环,也就是替换字符仍是被替换字符,此时将其临时替换一个特定字符$tmp_match
$replace = implode(',',$replace);
$replace = str_replace($word,$tmp_match,$replace); //临时替换匹配字符
$replace = explode(',',$replace);
//替换处理
$string = preg_replace($search,$replace,$string,1); //每次只替换数组中的一个
$string = str_replace($tmp_match,$word,$string); //还原临时替换的匹配字符
return $string;
}
//示例1
$string = 'aaabaaacaaadaaa';
$word = 'aaa';
$replace = array(null,'xxx','yyy');
echo '原文:'.$string.'
输出:'.multiple_replace_words($word,$replace,$string).'

';
//示例2
$string = '中文aaab中文ccaaad中文eee';
$word = '中文';
$replace = array(null,'(替换中文2)','(替换中文3)');
echo '原文:'.$string.'
输出:'.multiple_replace_words($word,$replace,$string);
/*
输出结果:
原文:aaabaaacaaadaaa
输出:aaabxxxcyyydaaa
原文:中文aaab中文ccaaad中文eee
输出:中文aaab(替换中文2)ccaaad(替换中文3)eee
//*/

作者:Zjmainstay

www.bkjia.com true http://www.bkjia.com/PHPjc/325899.html TechArticle 复制代码 代码如下: ?php header("Content-type: text/html; charset=utf-8"); function multiple_replace_words($word,$replace,$string,$tmp_match='#a_a#'){ preg_match_all('/'.$wo...
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