用多个字符串替换某些单词PHP

Question

I have a database of strings and a database of words and their corrections. I need to find the words within the strings and replace them with their corrections. I cannot figure out how to do it and have it loop through all of the strings in the database. I need help.

I was thinking along the lines of the following pseudo code"

//while loop to grab all the strings from db

//add all the words to look for to an array
//add all of the word replacements to an array

//preg replace or str replace the words with the replacements in the string.

Any ideas?

Answer 1

I would take a look at using strtr . This takes a string (sentence) as the first parameter and an array of key/value pairs as replacement text.

<?php

$sentence = "The quick brown fox jumps over the lazy dog";
$replacements = array("quick" => "fast", "brown" => "white", "fox" => "hair");

echo strtr($sentence, $replacements);

Yields:

The fast white hair jumps over the lazy dog

I would also read up on Tokenization if you are not familiar with it as a concept. It may help you understand the underlying logic behind how this works.

Answer 2

If you put all of the strings into an array $orig , all of the words into an array $words , and all of the corrections in to an array $corrections , you can just do this:

$corrected = str_replace($words, $corrections, $orig);

Here is the documentation on str_replace .