?
Solved

PHP string from an array element

Posted on 2007-03-21
3
Medium Priority
?
237 Views
Last Modified: 2010-07-27
for ($i = 0; $i < count($lines); $i++)
{
if (strpos($lines[$i],"The river comes") >= 0)
{
      $current = $lines[$i];
}
}

This condition does show as true exactly once which is right.  $current, however,  is always just a return character.  I am getting so aggravated with this.
I have tried this using strval with the same result.
0
Comment
Question by:okerupt
  • 2
3 Comments
 
LVL 35

Accepted Solution

by:
Terry Woods earned 1000 total points
ID: 18768789
When "The river comes" is at the start of the string, strpos returns 0 and $current is set. However, when it's not found at all, strpos returns false which seems to also evaluate to 0, so $current is also set (but it shouldn't be).

Try changing your test to:
  if (is_numeric(strpos($lines[$i],"The river comes")))
0
 
LVL 35

Expert Comment

by:Terry Woods
ID: 18768793
Just so you know, I tested it as follows:

$lines = array("When The river comes by",
               "blah",
               "The river comes through");
for ($i = 0; $i < count($lines); $i++) {
  print "Searching $i: ".$lines[$i]."<br>\n";
  if (is_numeric(strpos($lines[$i],"The river comes"))) {
    $current = $lines[$i];
    print "Found: $current at pos ".strpos($lines[$i],"The river comes")."<br>\n";
  }
}

displays:

Searching 0: When The river comes by
Found: When The river comes by at pos 5
Searching 1: blah
Searching 2: The river comes through
Found: The river comes through at pos 0
0
 

Author Comment

by:okerupt
ID: 18770623
You're right about false = 0.  As a .net programmer that irritates me.
0

Featured Post

Upgrade your Question Security!

Your question, your audience. Choose who sees your identity—and your question—with question security.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article discusses how to create an extensible mechanism for linked drop downs.
This article discusses how to implement server side field validation and display customized error messages to the client.
The viewer will learn how to count occurrences of each item in an array.
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…
Suggested Courses

592 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question