Question

having issue with the explode, i have simple text file and each line is end with number. i just want to extract end of line number and create same number of sub stings. i tried to use explode function but unable to retrieve only end of string number. following is .txt file structure and my code with expected result.

‘text.txt’

a1 bbb ccc 111-111 ddd eee 3
a2 fff ccc (123-12312) 111-111 ddd eee 2
a3 bbb aaa (32 32)111-111 ddd eee 4

<?php  
    $file = "C:\\test.txt";  
    $f = fopen($file, "r");  
    while ( $line = fgets($f, 1000) ) {  
        print "<br/>";  
        $pieces = explode(" ", $line);  
        print $line;  
        print "<br/>";  
        print "<\t>";  
        for(i=0; i>=$pieces[5];i++)  
        {  
            print "<br/>";  
            print "<\t>";  
        }  
        print "<br/>";  
     }  
?  

Output:
a1

1. sub string
2. sub string
3. sub string

a2
1. sub string
2. sub string

a3
1. sub string
2. sub string
3. sub string
4. sub string

Answer 1

You could also just use substr()

echo substr(trim($line), -1);

Tho I would do it like:

<?php
$file = "./test.txt";

foreach(file($file) as $lines){
    echo '<ol>'.PHP_EOL;
    $i = 1;
    foreach($parts = explode(' ',trim($lines)) as $key=>$line){
        if($key == 0){echo "\t<p>".$line.'</p>'.PHP_EOL;}
        if($key >= 1 && $key <= end($parts)){echo  "\t<li>".$line.'</li>'.PHP_EOL;}
        $i++;
    }
    echo '</ol>'.PHP_EOL;
}
/* Result
<ol>
    <p>a1</p>
    <li>bbb</li>
    <li>ccc</li>
    <li>111-111</li>
</ol>
<ol>
    <p>a2</p>
    <li>fff</li>
    <li>ccc</li>
</ol>
<ol>
    <p>a3</p>
    <li>bbb</li>
    <li>aaa</li>
    <li>(32</li>
    <li>32)111-111</li>
</ol>

*/
?>