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This article will explain in detail how to filter sensitive words in PHP. The content of the article is of high quality, so the editor shares it for you as a reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

1. Filtering method of sensitive words

/ * * @ todo sensitive words filter, return result * @ param array $list define sensitive words one-dimensional array * @ param string $string content to be filtered * @ return string $log processing result * / function sensitive ($list, $string) {$count = 0; / / number of illegal words $sensitiveWord =''; / / illegal words $stringAfter = $string; / / replaced content $pattern = "/" .implode ("|", $list). "/ I" / / define the regular expression if (preg_match_all ($pattern, $string, $matches)) {/ / match the result $patternList = $matches [0]; / / match the array $count = count ($patternList); $sensitiveWord = implode (',', $patternList); / / convert the array of sensitive words to the string $replaceArray = array_combine ($patternList,array_fill ($patternList),'*') / merge the matched arrays and replace them with $stringAfter = strtr ($string, $replaceArray); / / replace the result} $log = "the original sentence is [{$string}]"; if ($count==0) {$log. = "No sensitive words have been matched yet!" ;} else {$log. = "match to [{$count}] sensitive words: [{$sensitiveWord}]". "replaced by: [{$stringAfter}]";} return $log;}

2. Call method

Function testAction () {$string = 'likeyou Xiaobai loves rhubarb'; / / content to be filtered $list = ['Xiao Ming', 'Xiao Hong','Da Bai', 'Xiao Bai', 'Xiao Hei', 'me',' you']; / / define sensitive words array $result = $this- > sensitive ($list, $string); echo ($result); die / / print result: / * the original sentence is "likeyou Xiaobai likes rhubarb loved by Xiaobai] matches to [3] sensitive words: [you, Xiaobai, Xiaohei] is replaced by: [like** likes * beloved rhubarb] * /} about how to filter sensitive words in PHP. I hope the above content can be helpful to you and learn more. If you think the article is good, you can share it for more people to see.

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