Text string to multiple lines

[NXArmada]

I have the follow code, but all it outputs is F

<?php

$str_value = "Feel free to use the regular|expression we made above on your own site to validate|email addresses, or modify it for your own purposes.";

for($i=0; $i<sizeof($str_value); $i++) { 
    $line = trim($str_value[$i]); 
    $arr = explode("|",$line);
    $pg = 3600;
    $pg += 100;
    
    $text = "". implode($arr) .""; 
    echo $text ."<br>\n";
    
}

?>

It should output:

Feel free to use the regular
expression we made above on your own site to validate
email addresses, or modify it for your own purposes.

Any ideas?

[magicyte]

Because instead of the = sign next to $arr, you should have put the += sign, I believe.

-magicyte

[NXArmada]

Because instead of the = sign next to $arr, you should have put the += sign, I believe.

-magicyte

I get this:
Fatal error: Unsupported operand types

[magicyte]

Uh, well I see what you mean when you say it prints "F". I tried it out, and it actually prints out "F" plus an added <br> (linebreak). I have one question. What is $pg for? BTW, I am a little bit new on PHP, but I CAN help, so what do ALL of these BUILT-IN functions do, ex explode, implode, trim, etc.?

-magicyte

P.S. VERY IMPORTANT!! I just noticed something I did wrong. PHP does allow the += sign. Sorry! Pre-define the $arr like this:

$arr;

then do this:

$arr += explode("|",$line);

That may work. Or, instead of +=, .= might work.

[djr33]

+= is allowed in PHP. It is, however, only for mathematical operations and has nothing to do with the script above. (unlike JS, you would use .= for strings.)

One major problem here, and I don't know why it isn't giving you an error, is that you're not using implode('|',$arr);
implode, I believe, requires a first operator of the "glue" to reconnect the strings. Feel free to use "" as an empty string if you want.

However, overall, that doesn't do what you want. Using a for loop generally requires that you know how many splits you have first, or at least that you're using a value inside the loop to at some point change and terminate the loop. Neither is the case. It's surprising it isn't an infinite loop.

Anyway, here's something that will work:

Version 1:

<?php
$str = 'abc|def|ghi';

//simplest, just replace:
$str = str_replace('|',"\n",$str);
echo $str;
///OR
//easy foreach loop:
$str = explode('|',$str);
foreach ($str as $ln) {
echo $ln."\n";
}
///OR
//a more complex for loop:
$str = explode('|',$str);
for ($i=0;$i<count($str);$i++) {
echo $str[$i]."\n";
}

///OR
//if you must avoid using explode:
while (strpos($str,'|')!==FALSE) {
echo substr($str,0,strpos($str,'|'))."\n"; //echo everything before the first |
$str = substr($str,strpos($str,'|')+1); //replace the string with everything after the first |
}
echo $str."\n"; //echo the last bit, outside of the loop, since there is no | now

[NXArmada]

the $pg is not used just something i put in to plan ahead if i can get this to work correctly.

http://us.php.net/manual/en/function.explode.php
http://us.php.net/manual/en/function.implode.php
http://us.php.net/manual/en/function.trim.php

[NXArmada]

+= is allowed in PHP. It is, however, only for mathematical operations and has nothing to do with the script above. (unlike JS, you would use .= for strings.)

One major problem here, and I don't know why it isn't giving you an error, is that you're not using implode('|',$arr);
implode, I believe, requires a first operator of the "glue" to reconnect the strings. Feel free to use "" as an empty string if you want.

Daniel I did what you suggested and no change.

[NXArmada]

$arr += explode("|",$line);

yeah that what i did when you first suggest += and the error is still the same
Fatal error: Unsupported operand types

[magicyte]

Check out my post. I edited it. I have no whereabouts of what glue does, so, Daniel, I ask for help .

-magicyte

[NXArmada]

Check out my post. I edited it. I have no whereabouts of what glue does, so, Daniel, I ask for help .

-magicyte

if i do .= i get this

Warning: implode() [function.implode]: Bad arguments.