Question

我已绘制了替换词的地图:

$map = array(
   word1  =>  replacement1 ,
   word2 blah  =>  replacement 2 ,
  //...
);

我需要替换措辞。但是,只有在以下情况下才能替换:

It is not in the middle of some other word ex. textword1 will not be replaced with replacement1 because it is part of another token.
Separators must be saved, but words before/after them should be replaced.

我可以把扼杀与言辞分开,但是,如果将用几条标语绘制的数值(如word2 blah)的话,这并不奏效。

Answer 1

$map = array(    foo  =>  FOO ,
                 over  =>  OVER );

// get the keys.
$keys = array_keys($map);

// get the values.
$values = array_values($map);

// surround each key in word boundary and regex delimiter
// also escape any regex metachar in the key
foreach($keys as &$key) {
        $key =  / .preg_quote($key). / ;
}

// input string.    
$str =  Hi foo over the foobar in stackoverflow ;

// do the replacement using preg_replace                
$str = preg_replace($keys,$values,$str);

。

友情链接