Actually easy PHP IF-statement on array

Question

I'm working on a little thing for uni. However, the following is a small problem in the whole thing, which keeps me from progressing.

I read in a file containing the data on the names and want to sort it depending on the different details using if-statements so far. This is where the problem occurs:

for($i ;$i < count($file); $i++){
    if($i>0) {
        $data = explode(",", $file[$i]);
        echo $data[0] . $data[1] . $data[2] . $data[3] . $data[4];  //this works
        ?><br /><?php

        //The following one works too.
        if($data[0] == "Ann"){
            echo $data[0];
            ?><br /><br /><?php
        }

        // All these don't work
        if($data[3] == "californien") {
            echo 'Name: '. $data[0] . ', Occurences: '. $data[4];
            ?><br /><?php   
        }

        if($data[2] == "20-30"){
            echo $data[0];
            ?><br /><?php
        }

        if($data[1] == "w"){
            echo $data[0];
            ?><br /><?php
        }
    }
}

A sample from the csv file looks like this:

(Name, sex, year interval, state, occurences)

Mary, w, 10-20, californien, 88

Just using echo on some of the $data array elements works fine. Using the if-statement on the name ($data[0]) works, too. But if I wanna use any of the other parts like the interval, state sex, or occurrences it doesn't show anything at all.

I guess and hope it's just a small thing I didn't notice.

Anyone know what's wrong?

Can you post what's the result if you do print_r($data) after $data = explode(",", $file[$i]);. Would definitely help a lot. — Kamina
– Kamina, Commented May 13, 2017 at 19:55
Not that it is wrong, but I would write echo '<br>'; instead of ?><br /><?php. — KIKO Software
– KIKO Software, Commented May 13, 2017 at 19:57
Also may there is some starting or trailing spaces there in your other columns data so use trim() like:- if(!empty(trim($data[3])) && trim($data[3]) == "californien") { and so on for othhers — Death-is-the-real-truth
– Death-is-the-real-truth, Commented May 13, 2017 at 19:57
Probably an extra space after each comma. If that's the problem explode(", ",... should work. — jh1711
– jh1711, Commented May 13, 2017 at 19:58

Death-is-the-real-truth · Accepted Answer · 2017-05-15 13:10:39Z

1

Based on this input shown by you:-

(Name, sex, year interval, state, occurences)

Mary, w, 10-20, californien, 88

It seems you have white-spaces in your values.So you can resolve it like below:-

1.explode() with", "(comma with space) :-

$data = explode(", ", $file[$i]);

2.Or use trim() like below:-

if(trim($data[3]) == "californien") { // and so-on for others

A clean code need to be like below-

for($i ;$i < count($file); $i++){
    if($i>0) {
        $data = explode(", ", $file[$i]);

       //exploded with comma and spaces but confirm again through trim()

        if(trim($data[0]) == "Ann"){
            echo $data[0]."<br/><br/>";
        }

        if(trim($data[1]) == "w"){
            echo $data[0]."<br />";
        }

        if(trim($data[2]) == "20-30"){
            echo $data[0]."<br />";
        }

        if(trim($data[3]) == "californien") {
            echo 'Name: '. $data[0] . ', Occurences: '. $data[4]."<br />";
        }
    }
}

edited May 15, 2017 at 13:10

answered May 13, 2017 at 20:07

Death-is-the-real-truth

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2 Comments

Katastrophenmagnet Over a year ago

Thanks a lot! I didn't realize that the white spaces were the problem. You also suggested a great solution!

Death-is-the-real-truth Over a year ago

@Katastrophenmagnet glad to help you:):)

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