plugins - code is working properly in Core PHP but writing coding in WordPress

admin管理员组

文章数量:1318958

function generate_pdf($array)
{
    header('Content-Type: text/csv');
header('Content-Disposition: attachment; filename="sample.csv"');

$fp = fopen('php://output', 'wb');
foreach ( $array as $line ) {
    $val = explode(",", $line);
    fputcsv($fp, $val);
}
fclose($fp);
}

$array = array(
    'aaa,bbb,ccc,dddd',
    '123,456,789',
    '"aaa","bbb"'
);

generate_pdf($array);

Here's my code generating correct csv file, But When I'm implementing this in my Custom Plugin It's generating Coding in .csv file

function generate_pdf($array)
{
    header('Content-Type: text/csv');
header('Content-Disposition: attachment; filename="sample.csv"');

$fp = fopen('php://output', 'wb');
foreach ( $array as $line ) {
    $val = explode(",", $line);
    fputcsv($fp, $val);
}
fclose($fp);
}

$array = array(
    'aaa,bbb,ccc,dddd',
    '123,456,789',
    '"aaa","bbb"'
);

generate_pdf($array);

Here's my code generating correct csv file, But When I'm implementing this in my Custom Plugin It's generating Coding in .csv file

• plugins
• php
• plugin-development
• code
• csv

Share Improve this question edited Oct 15, 2020 at 18:41 Tom J Nowell♦ 61k77 gold badges7979 silver badges148148 bronze badges asked Oct 15, 2020 at 18:05 Mr_UssiMr_Ussi 3633 bronze badges 2

• 1 Can you rephrase your last sentence? It says your code X but when in your custom plugin it also does X which doesn't make sense, what do you mean by generate coding in CSV file? How are you using the code in your plugin? it isn't clear what the WP version of this looks like or how it misbehaves – Tom J Nowell ♦ Commented Oct 15, 2020 at 18:42
• I think I’ve seen this before... instead of outputting just the CSV or PDF you’re also getting HTML in the output, correct? If so then you’ll need ob_start() at the beginning. Let me see if I can find my solution. – Tony Djukic Commented Oct 15, 2020 at 19:36

Add a comment  | 

1 Answer 1

Sorted by: Reset to default 0

When I attempted something similar I experienced the same issue where the HTML code of the page I was generating the CSV from would be included within the CSV mixed with the data I actually wanted.

The two things I figured out, after searching and reading and reading and searching was to use ob_end_clean(); before I start outputting the content of the CSV. ob_end_clean() is 'Output Buffers End/Clean` - https://www.php/manual/en/function.ob-end-clean.php

I also added die() at the end of the CSV output code to, well, exit the process. You can also use exit().

function generate_pdf( $array ) {
    ob_end_clean(); //ADD THIS LINE
    header( 'Content-Type: text/csv' );
    header('Content-Disposition: attachment; filename="sample.csv"');

    $fp = fopen( 'php://output', 'wb' );
    foreach( $array as $line ) {
        $val = explode( ',', $line );
        fputcsv( $fp, $val );
    }
    fclose( $fp );
    die(); //add this as well
}

本文标签： pluginscode is working properly in Core PHP but writing coding in WordPress