PHP array one-to-one replacement implementation code

PHP array one-to-one replacement implementation code_PHP tutorial

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Release： 2016-07-21 15:16:21

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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); //Match all keywords
$search = explode(',','/'.implode('/,/',$matches[0]).'/'); 
// There is no matching keyword 
if(empty($matches[0])) return false; 
//Special replacement settings
$count = count($matches[0]); 
foreach( $replace as $key=>$val){ 
if(!isset($matches[0][$key])) unset($replace[$key]); //Eliminate out-of-bounds replacement
} 
//Merge the special replacement array and the matching array
for($i=0;$i<$count;$i++){ 
$matches[0][$i] = isset($replace[ $i])? $replace[$i] : $matches[0][$i]; 
} 
$replace = $matches[0]; 
//Prevent replacement loops, that is, replacement The character is still the replaced character, and now it is temporarily replaced with a specific character $tmp_match 
$replace = implode(',',$replace); 
$replace = str_replace($word,$tmp_match,$replace ); //Temporary replacement of matching characters
$replace = explode(',',$replace); 
//Replacement processing
$string = preg_replace($search,$replace,$string,1) ; //Replace only one character in the array at a time
$string = str_replace($tmp_match,$word,$string); //Restore the temporarily replaced matching character
return $string; 
} 
//Example 1 
$string = 'aaabaaacaaadaaa'; 
$word = 'aaa'; 
$replace = array(null,'xxx','yyy'); 
echo 'Original text :'.$string.'
Output: '.multiple_replace_words($word,$replace,$string).'

'; 
//Example 2 
$string = 'Chinese aaab Chinese ccaaad Chinese eee'; 
$word = 'Chinese'; 
$replace = array(null,' (replace Chinese 2)',' (replace Chinese 3) '); 
echo 'Original text: '.$string.'
Output: '.multiple_replace_words($word,$replace,$string); 
/* 
Output result: 
Original text: aaabaaacaaadaaa 
Output: aaabxxxcyyydaaa 
Original text: Chinese aaab Chinese ccaaad Chinese eee 
Output: Chinese aaab (replace Chinese 2) ccaaad (replace Chinese 3) eee 
//*/ 