Check if string contains a value in array

Question

I am trying to detect whether a string contains at least one URL that is stored in an array   Here is my array    owned urls   array  website1 com    website2 com    website3 com      The string is entered by the user and submitted via PHP  On the confirmation page I would like to check if the URL entered is in the array   I have tried the following    string    my domain name is website3 com   if  in array  string   owned urls         echo  Match found        return true    else       echo  Match not found       return false      No matter what is inputted the return is always  Match not found    Is this the correct way of doing things

User · Answer

You are checking whole string to the array values. So output is always false.

I use both array_filter and strpos in this case.

<?php
$urls= array('website1.com', 'website2.com', 'website3.com');
$string = 'my domain name is website3.com';
$check = array_filter($urls, function($url){
    global $string;
    if(strpos($string, $url))
        return true;
});
echo $check?"found":"not found";

User · Answer

Simple str replace with count parameter would work here    count   0  str replace  owned urls       string   count      if replace is successful means the array value is present Match Found   if   count  gt  0      echo  One of Array value is present in the string        More Info - https   www techpurohit com extended-behaviour-explode-and-strreplace-php

User · Answer

You are not using the function in array  http   php net manual en function in-array php  correctly   bool in array   mixed  needle   array  haystack    bool  strict   FALSE       The  needle has to have a value in the array  so you first need to extract the url from the string  with a regular expression for example   Something like this    url   extrctUrl  my domain name is website3 com       url will be  website3 com  in array  url   owned urls

User · Answer

message    This is test message that contain filter world test3         filterWords   array  test1    test2    test3          messageAfterFilter    str replace  filterWords      message        if  strlen  messageAfterFilter     strlen  message            echo  message is filtered       else         echo  not filtered

User · Answer

You can concatenate the array values with implode and a separator of   and then use preg match to search for the value   Here is the solution I came up with       emails   array   gmail     hotmail     outlook     live     msn     yahoo     ymail     aol     emails   implode       emails    if  preg match    emails i    email        do something

User · Answer

I find this fast and simple without running loop    array   array  this    that    there    here    where     string    Here comes my string    string2    I like to Move it  Move it     newStr   str replace  array       string    if strcmp  string   newStr     0        echo  No Word Exists - Nothing got replaced in  newStr     else       echo  Word Exists - Some Word from array got replaced        newStr   str replace  array       string2    if strcmp  string2   newStr     0        echo  No Word Exists - Nothing got replaced in  newStr     else       echo  Word Exists - Some Word from array got replaced        Little explanation    Create new variable with  newStr replacing value in array of original string  Do string comparison - If value is 0  that means  strings are equal and nothing was replaced  hence no value in array exists in string  if it is vice versa of 2  i e  while doing string comparison  both original and new string was not matched  that means  something got replaced  hence value in array exists in string

User · Answer

search    web       owned urls   array  website1 com    website2 com    website3 com              foreach   owned urls as  key   gt   value             if  stristr  value   search                     not fount          else          found            this is the best approach search for any substring   case-insensitive and fast              just like like im mysql   ex      select    from table where name     web

User · Answer

owned urls  array  website1 com    website2 com    website3 com         string    my domain name is website3 com       for  i 0   i  lt  count  owned urls    i                  if strpos  string  owned urls  i      false              echo  Found

User · Answer

I think that a faster way is to use preg match    user input    Something website2 com or other    owned urls array   array  website1 com    website2 com    website3 com     if   preg match     implode      owned urls array        user input        echo  Match found     else      echo  Match not found

User · Answer

Here is a mini-function that search all values from an array in a given string  I use this in my site to check for visitor IP is in my permitted list on certain pages   function array in string  str  array  arr        foreach  arr as  arr value      start looping the array         if  stripos  str  arr value      false  return true    if  arr value is found in  str return true           return false    else return false     how to use   owned urls   array  website1 com    website2 com    website3 com       this example should return FOUND  string    my domain name is website3 com   if  array in string  string   owned urls         echo  first  Match found lt br gt       else       echo  first  Match not found lt br gt         this example should return NOT FOUND  string    my domain name is website4 com   if  array in string  string   owned urls         echo  second  Match found lt br gt       else       echo  second  Match not found lt br gt        DEMO  http   phpfiddle org lite code qf7j-8m09   stripos function is not very strict  it s not case sensitive or it can match a part of a word http   php net manual ro function stripos php if you want that search to be case sensitive use strpos http   php net manual ro function strpos php for exact match use regex  preg match   check this guy answer https   stackoverflow com a 25633879 4481831

User · Answer

Try this    string    my domain name is website3 com   foreach   owned urls as  url          if  strstr  string   url        mine version     if  strpos  string   url      FALSE       Yoshi version         echo  Match found            return true          echo  Not found    return false    Use stristr   or stripos   if you want to check case-insensitive

User · Answer

This was a lot easier to do if all you want to do is find a string in an array    array     they has mystring in it    some    other    elements    if  stripos json encode  array   mystring       false    echo  found mystring

User · Answer

string    my domain name is website3 com    a   array  website1 com   website2 com   website3 com      result   count array filter  a  create function   e   return strstr     string      e       gt 0   var dump  result      output  bool true

User · Answer

I came up with this function which works for me  hope this will help somebody   word list    word1  word2  word3  word4    str    This string contains word1 in it    function checkStringAgainstList  str   word list       word list   explode        word list      str   explode       str      foreach   str as  word       if  in array strtolower  word    word list             return TRUE          endforeach     return false      Also  note that answers with strpos   will return true if the matching word is a part of other word  For example if word list contains  st  and if your string contains  street   strpos   will return true

User · Answer

Try this    owned urls  array  website1 com    website2 com    website3 com      string    my domain name is website3 com     url string   end explode       string     if  in array  url string  owned urls        echo  Match found        return true    else       echo  Match not found       return false      - Thanks

User · Answer

If your  string is always consistent  ie  the domain name is always at the end of the string   you can use explode   with end    and then use in array   to check for a match  as pointed out by  Anand Solanki in their answer   If not  you d be better off using a regular expression to extract the domain from the string  and then use in array   to check for a match   string    There is a url mysite3 com in this string   preg match      http          www     a-z0-9-      a-z0-9   2 5   i    string   matches    if  empty  matches 1           no domain name was found in  string   else     if  in array  matches 1    owned urls            exact match found     else          exact match not found        The expression above could probably be improved  I m not particularly knowledgeable in this area  Here s a demo

[php] Check if string contains a value in array

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