删除php中的Case敏感性和子字符串检查

Question

I want to find out whether the input string is a substring of another string or not , is there any function that do so ignoring case sensitivity? The substring check should be done ignoring case sensitivity. Please tell me about any such function

Answer 1

Use stristr

Returns the matched substring. If needle is not found, returns FALSE.

if(stristr("Hello","hello world")!==FALSE)
{
  // Yes needle is a part of haystack
}