PHP read file match if statement - php

Question

everyone I have the following file and I want to show lines that match on if condition and pass the other.
I have this TXT file:
Doc. number|Date|Price|Description|Name
100|11/11/2015|99|Test 1|Alex
101|11/11/2015|120|Test 2
102|11/11/2015|100|Test 3|John
102|11/11/2015|140||
103|11/11/2015|110|Test 4|
And this is my PHP code:
$file_handle = fopen("file.txt", "rb");
$i = 0;
echo "<table border='1'>";
echo "<tr><th>Doc. number</th><th>Date</th><th>Price</th><th>Description</th><th>Name</th></tr>";
while (!feof($file_handle)) {
$line_of_text = fgets($file_handle);
$parts = explode('|', $line_of_text);
if($i > 1) { // Pass the first line
echo "<tr>";
echo "<td>" . $parts[0] . "</td>"; // Doc. number
echo "<td>" . $parts[1] . "</td>"; // Date
echo "<td>" . $parts[2] . "</td>"; // Price
echo "<td>" . $parts[3] . "</td>"; // Description
echo "<td>" . $parts[4] . "</td>"; // Name
echo "</tr>";
}
$i++;
}
fclose($file_handle);
echo "</table>"
How I can check if there are no "Description" and/or "Name" in table and pass this line. I want to show(get) only line that match on if condition.
I will be very grateful if someone have idea. Thanks in advance.

Answer 1

As simple as
$file_handle = fopen("file.txt", "rb");
$i = 0;
echo "<table border='1'>";
echo "<tr><th>Doc. number</th><th>Date</th><th>Price</th><th>Description</th><th>Name</th></tr>";
while (!feof($file_handle)) {
$line_of_text = fgets($file_handle);
$parts = explode('|', $line_of_text);
if($i > 1 && !empty($parts[3]) && !empty($parts[4])) { // Pass the first line and lines without description / name
echo "<tr>";
echo "<td>" . $parts[0] . "</td>"; // Doc. number
echo "<td>" . $parts[1] . "</td>"; // Date
echo "<td>" . $parts[2] . "</td>"; // Price
echo "<td>" . $parts[3] . "</td>"; // Description
echo "<td>" . $parts[4] . "</td>"; // Name
echo "</tr>";
}
$i++;
}
fclose($file_handle);
echo "</table>"

Answer 2

Only print table row if we have name and description:
if($i > 1 && $parts[3] && $parts[4]) {

Answer 3

You can put condition before echo statement and if it will be false just skip "echo";
if (count($parts) === 5) {
$error = 0;
foreach ($parts as $part) {
if (empty($part)) error++;
}
if($i > 1 && $error === 0) {
echo "<tr>";
echo "<td>" . $parts[0] . "</td>"; // Doc. number
echo "<td>" . $parts[1] . "</td>"; // Date
echo "<td>" . $parts[2] . "</td>"; // Price
echo "<td>" . $parts[3] . "</td>"; // Description
echo "<td>" . $parts[4] . "</td>"; // Name
echo "</tr>";
}
}

Answer 4

I've a solution that can help you.
But why I think you need just scape the heading line. so I changed if($i > 1) to be if($i >0)
$file_handle = fopen("file.txt", "rb");
$i = 0;
echo "<table border='1'>";
echo "<tr><th>Doc. number</th><th>Date</th><th>Price</th><th>Description</th><th>Name</th></tr>";
while (!feof($file_handle)) {
$line_of_text = fgets($file_handle);
$parts = explode('|', $line_of_text);
if($i > 0) { // Pass the first line
if ( (!empty($parts[3])) && (!empty($parts[4])) ){
echo "<tr>";
echo "<td>" . $parts[0] . "</td>"; // Doc. number
echo "<td>" . $parts[1] . "</td>"; // Date
echo "<td>" . $parts[2] . "</td>"; // Price
echo "<td>" . $parts[3] . "</td>"; // Description
echo "<td>" . $parts[4] . "</td>"; // Name
echo "</tr>";
}
}
$i++;
}
fclose($file_handle);
echo "</table>"

Answer 5

Your file has a CSV structure, pipe delimited.
So parse it as a CSV.
Note the using of array_shift to get the header of the CSV and passing the delimiter parameter to fgetcsv.
Also consider using implode instead explicitly passing each member of the array between td tags.
Here's an example using two functions, one for parsing the CSV and returning the data,
and another one for displaying the data and doing the validation.
function getData($file){
$rows = array();
if (($handle = fopen($file, "r")) !== FALSE) {
while (($data = fgetcsv($handle, null, "|")) !== FALSE) {
$rows[] = $data;
}
fclose($handle);
}
return $rows;
}
function displayData($rows){
$header = array_shift($rows);
$output = '<table border="1">' . PHP_EOL;
$output .= '<tr><th>' . implode('</th><th>',$header) . '</th></tr>' . PHP_EOL;
foreach($rows as $row){
if (isset($row[3]) and isset($row[4]) and $row[3]!='' and $row[4]!=''){
$output .= '<tr><td>' . implode('</td><td>',$row) . '</td></tr>' . PHP_EOL;
}
}
$output .= '</table>';
return $output;
}
$rows = getData("pipe.txt");
print displayData($rows);
This will output the following
<table border="1">
<tr><th>Doc. number</th><th>Date</th><th>Price</th><th>Description</th><th>Name</th></tr>
<tr><td>100</td><td>11/11/2015</td><td>99</td><td>Test 1</td><td>Alex</td></tr>
<tr><td>102</td><td>11/11/2015</td><td>100</td><td>Test 3</td><td>John</td></tr>
</table>