CODEWITHSUNDEEP
phpapacherenderfpm
R.Meredith
R.Meredith

Reputation: 314

PHP-FPM stops rendering page when more than X notices are thrown

Recently changed to php-fpm from apache php on a very old legacy codebase. Having an issue where the whole page stops rendering with no errors in fpm or apache logs.

I wrote a quick test script to reproduce the errors

<?php
error_reporting(E_ALL);
ini_set('display_errors', 'on');

for ($k = 0; $k < 1000; $k++) {
    echo "new line: " . $k;
    echo "<br>";
    print_mem();
    trigger_error("php-fpm error");
}

function print_mem()
{
    /* Currently used memory */
    $mem_usage = memory_get_usage();

    /* Peak memory usage */
    $mem_peak = memory_get_peak_usage();

    echo 'The script is now using: <strong>' . round($mem_usage / 1024) . 'KB</strong> of     memory.<br>';
    echo 'Peak usage: <strong>' . round($mem_peak / 1024) . 'KB</strong> of memory.    <br><br>';
}

We are currently cleaning up the legacy code but it is a lot of work, can you suggest a way to get over this limit?

Upvotes: 0

Views: 413

Answers (1)

R.Meredith
R.Meredith

Reputation: 314

The problem was caused by output buffering in php

changed from 4096 to On in php.ini.

; Development Value: 4096
; Production Value: 4096
; http://php.net/output-buffering
output_buffering = On

It now renders the full loop.

I am unsure why this would cause php to stop rendering, also it is not recommended to set output_buffering to On as detailed in the php.ini.

Upvotes: 1

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