[RESOLVED] Comparing string and array values !?

[Mad_T]

Trying to get this to work :

<?php
$lines = file('YourFile.txt'); 
$email = "[e-mail]";

echo "email address = " .$email . "<br><br>";

foreach ($lines as $line_num => $line) { 
if ($email === $line) echo "MATCH";

print "<font color=red>Line #{$line_num}</font> : " . $line . "<br />\n";
} 
?> 

YourFile.txt is:

[e-mail]
[e-mail]
[e-mail]

How do I find and match the values ?
thanks

[OOP]

Hi there

you need to remove the new line characters at the end of each line then you can compare both values

So you can do something as shown below:

$lines = file('test.txt'); 
$email = "[e-mail]";

echo "email address = " .$email . "<br><br>";

foreach ($lines as $line_num => $line) { 

$line = trim($line);
//$line = str_replace("\r\n", "", $line);

if ($email == $line) echo "MATCH";

print "<font color=red>Line #{$line_num}</font> : " . $line . "<br />\n";
} 

[nevvermind]

Note that lines in a file start with 1, whereas array indexes start with 0.
He shouldn't trim the matched string, but preventing white-spaces to be inserted when writing the file in the first place.

Here's using array_search():

<?php

$lines = file('YourFile.txt', FILE_IGNORE_NEW_LINES);
$email = '[e-mail]';

$match_index = array_search($email, $lines);

if ( $match_index !== FALSE ) {
    echo "MATCH: <font color=red>Line #" . (string)($match_index + 1) . "</font> : $lines[$match_index] <br />\n";
}

[Mad_T]

Thanks. I tried both options.
Both worked, but solution one supports multiple matches.

Thanks 🙂

[bradgrafelman]

You could simply use [man]array_keys/man instead if you want multiple matches. Example (nevvermind's post with two small modifications):

<?php 

$lines = file('YourFile.txt', FILE_IGNORE_NEW_LINES); 
$email = '[e-mail]'; 

$match_index = array_keys($lines, $email); 

foreach($match_index as $index) { 
    echo "MATCH: <font color=red>Line #" . (string)($index + 1) . "</font> : $lines[$match_index] <br />\n"; 
}

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