Question

I use codeigniter.I want search in site contents for several word, that did existence it word in it site or no? if existence a word (of all words) in it site return is FALSE. i tried as following code but get error. How can done it?

DEMO: http://codepad.viper-7.com/rFiL01

<?php
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL,'stackoverflow.com');
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        $contents = curl_exec($ch);
        curl_close($ch);
        $link[] = array("Questions", "Favorite", "myfoodho");
                foreach($link as $val){
                    stristr($contents,$val); // Line 148
                    //if(){
                    //      return true;
                    //}else{
                    //    return false;
                    //}
                }
?>

Error:

A PHP Error was encountered

Severity: Warning

Message: stristr() [function.stristr]: needle is not a string or an
integer

Filename: views/exchange.php

Line Number: 148

Answer 1

When you write

$link[] = array("Questions", "Favorite", "myfoodho");

you are creating an array that contains another array, that is:

array(
    0 => array(
        "Questions", 
        "Favorite",
        "myfoodho"
    )
)

In the foreach loop you’re just going through the outer array and therefore $val contains the inner array, not the string values.

The solution is to remove the brackets and just assign the array to the variable.

$link = array("Questions", "Favorite", "myfoodho");

---

Debugging tip: The error message says “needle is not a string or an integer”. The “needle” of that function is the second parameter (check the docs if you’re not sure). You can then add var_dump( $val ) right before that line to check what the value actually is, if it’s not a string or an integer.