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  • Determine if string exists in input string

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    You can determine particular string exist in an input string with the help of strpos function. strpos returns false if the string is not found. It provides 0 if found at the beginning of string. It finds the position of occurrence of string within another string.

    if(strpos($filename, $match) !== false)
            {
            // $match is present in $filename
            }
        else 
           {
           // $match is not present in $filename 
           }
    

    Its syntax is given below

    strpos(string,find,start) 
    

    Where string requires the string to search, find specifies the string to find and starts specifies the position form where to begin the search.

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