Text string to multiple lines

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

PHP Code:

---

<?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?

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

-magicyte

Quote:

---

Originally Posted by magicyte

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

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.

+= 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 Code:

---

<?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

---

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

Quote:

---

Originally Posted by 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.

---

Daniel I did what you suggested and no change.

Quote:

---

Originally Posted by magicyte

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

---

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

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

-magicyte

Quote:

---

Originally Posted by magicyte

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

-magicyte

---

if i do .= i get this

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

Okay Daniel the code you provided:

PHP Code:

---

$str = explode('|',$str);
for ($i=0;$i<count($str);$i++) {
echo $str[$i]."\n";
} 


---

Works great now is there a way to do using

PHP Code:

---

printer_draw_text($handle, $specship, 1, 3600); 


---

So that each line that your code generates goes into its own printer_draw_text()

Okay i got my last question answered my self. so here is what my final code looks like. Provided for learning purpose.

PHP Code:

---

<?php

$int_y_pos = 3600;
$int_y_step_small = 100;

$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.";

$handle = printer_open("Brother HL-5150D"); 

printer_set_option($handle, PRINTER_MODE, text);
printer_set_option($handle, PRINTER_TEXT_ALIGN, PRINTER_TA_LEFT);

printer_start_doc($handle, "Invoice");
printer_start_page($handle);

$str = explode('|',$str_value);
for ($i=0;$i<count($str);$i++) {

$int_y_pos += $int_y_step_small;

printer_draw_text($handle, $str[$i], 1, $int_y_pos);

}

printer_end_page($handle);
printer_end_doc($handle);
printer_close($handle);

?>

---

This code allows you to take a string and break it up to multiple lines for PHP's print function. In my case (not shown above) every where the code picks up a </p> (generated by TinyMCE) it breaks it into a new printer_draw_text() function for printing straight to a printer (Windows Only).

Cool!

-magicyte