Question

How to find all occurrences of a word in a text file and echo the whole line in PHP

Answer 1

$f = fopen("e:/datefile.txt", "r") or die("Error open file!");
$s = "";
$word = "Web";
while(!feof($f)) 
{
    $s = fgets($f);
    if (strpos($s, $word) !== false)
        echo $s . "<br />";
}
fclose($f);
    
 

/*
run:

For Web Applications 
Is Popular On The Web 

*/

 

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Answer 2

$f = fopen("e:/datefile.txt", "r") or die("Error open file!");
$s = "";
$word = "web";
while(!feof($f)) 
{
    $s = fgets($f);
    //  strpos() function is case-sensitive
    if (strpos(strtolower($s), strtolower($word)) !== false)
        echo $s . "<br />";
}
fclose($f);
    
 

/*
run:

For Web Applications 
Is Popular On The Web 

*/

 

70+ SQL courses for beginners and professionals

Answer 3

$f = fopen("e:/datefile.txt", "r") or die("Error open file!");
$s = "";
$word = "web";
while(!feof($f)) 
{
    $s = fgets($f);
    //  stripos() function is NOT case-sensitive it's case-insensitive
    if (stripos($s, $word) !== false)
        echo $s . "<br />";
}
fclose($f);
    

/*
run:

For Web Applications 
Is Popular On The Web 

*/

 

70+ SQL courses for beginners and professionals