{"id":75287,"date":"2026-10-31T03:01:00","date_gmt":"2026-10-30T17:01:00","guid":{"rendered":"https:\/\/www.rjmprogramming.com.au\/ITblog\/?p=75287"},"modified":"2026-10-30T11:30:23","modified_gmt":"2026-10-30T01:30:23","slug":"crontab-and-curl-rearrangements-tutorial","status":"publish","type":"post","link":"https:\/\/www.rjmprogramming.com.au\/ITblog\/crontab-and-curl-rearrangements-tutorial\/","title":{"rendered":"Crontab and Curl Rearrangements Tutorial"},"content":{"rendered":"
\"Crontab<\/a>

Crontab and Curl Rearrangements Tutorial<\/p><\/div>\n

The recent WordPress Javascript Coding Rearrangements Primer Tutorial<\/a>‘s Performance Review initiatives for RJM Programming websites, particularly the PHP contributing one, left off with …<\/p>\n

\nHowever, that is part one of two, to this part of the Performance Review. Part two will be explained in days to come.\n<\/p><\/blockquote>\n

Well, it’s Days of our Lives<\/strike>To Come<\/i> time!<\/a><\/p>\n

Honing back into this WordPress blog’s 404.php (HTTP error 404 Not Found) intervener, and it’s penchant for using PHP’s …<\/p>\n


\nfile_get_contents<\/a>
\n<\/code><\/p>\n

… a lot<\/font>, it is also that the type of content being asked regarding the first argument (ie. content source) of interest that is of interest too. Read if argument one for PHP file_get_contents can be arranged to be a local file rather than a URL is that a performance improvement<\/a>, to see what we mean …<\/p>\n

\nYes, reading a local file with file_get_contents() is significantly faster and more performant than fetching a URL.
\nWhen you pass a URL, PHP must perform a DNS lookup, establish a TCP connection, handle HTTP\/HTTPS overhead, and wait for the remote server to respond. A local file bypasses the entire network stack and interacts directly with the local file system.\n<\/p><\/blockquote>\n

… and if we lean into the overnight crontab<\/a> and curl<\/a> processing we can store as global data attributes<\/a> (look for data-img<\/i> references in PHP code below)<\/font> into our Landing Page<\/a> (and friend)<\/font> webpage tutorial dropdown elements, in their option tags, a reference URL to that tutorial’s (quite often animated GIF, these days) tutorial picture, then we can arrange 404.php to start using PHP file_get_contents with a first argument pointing at that RJM Programming Apache\/PHP\/MySql web server’s “local”<\/font> file that represents the HTML of RJM Programming’s Landing Page<\/font> …<\/p>\n

<?php
\n
\n $wcontis=file_get_contents('..\/Welcome.html');
\n if (strpos($wcontis, '?p=' . $pnumis . '&') !== false) {
\n if (strpos(explode('<option',explode('?p=' . $pnumis . '&', $wcontis)[0])[-1 + sizeof(explode('<option',explode('?p=' . $pnumis . '&', $wcontis)[0]))], ' data-img=') !== false) {
\n $thatbpc=explode(' ',explode('>',explode(' data-img=',explode('<option',explode('?p=' . $pnumis . '&', $wcontis)[0])[-1 + sizeof(explode('<loption',explode('?p=' . $pnumis . '&', $wcontis)[0]))])[1])[0])[0];
\n }
\n } else {<\/font>
\n $thisbpc=file_get_contents('ht<\/font>tp:\/\/www.rjmprogramming.com.au\/ITblog\/?p=' . $pnumis, FALSE, NULL, 0, 150000);<\/font>
\n }
\n }<\/font>
\n<\/code>
\n?><\/p>\n

… rather than a URL pointing to a WordPress Blog posting<\/font> to improve performance around these here parts.<\/p>\n

To make this happen many readers will not be surprised to learn, involved, at the heart of it, scouring the WordPress MySql database using PHP SQL queries (via PHP mysqli<\/a> extension calls)<\/font> is now asking for more<\/font> …<\/p>\n

<?php
\n
\n $res = mysqli_query($link,\"SELECT ID, post_date, \" . $ptg . \" DATE_FORMAT(post_date,'%Y%m%d') As pdate, IfNull(post_excerpt, '') As post_excerpt, replace(post_title, ' ', LPAD(post_excerpt,13,'*')) as bpost_title, SUBSTRING(post_content FROM 1 FOR 500) AS ExtractString<\/font> FROM \" . $tname . \" WHERE post_status='publish' \" . $and . \" and post_title not like '%Show Tags of this Webpage%' and post_title not like '%Show Most Popular Words%' and substr(IfNull(post_excerpt, ''),1,1) >= '0' and substr(IfNull(post_excerpt, ''),1,1) <= '9' UNION SELECT ID, post_date, \" . $ptg . \" DATE_FORMAT(post_date,'%Y%m%d') As pdate, IfNull(post_excerpt, '') As post_excerpt, 'zzz' as bpost_title, SUBSTRING(post_content FROM 1 FOR 500) AS ExtractString<\/font> FROM \" . $tname . \" WHERE post_status='publish' \" . $and . \" and post_title not like '%Show Tags of this Webpage%' and post_title not like '%Show Most Popular Words%' and (substr(IfNull(post_excerpt, ''),1,1) < '0' or substr(IfNull(post_excerpt, ''),1,1) > '9') ORDER BY bpost_title, post_date DESC\");
\n<\/code>
\n?><\/p>\n

… and then referenced later on …<\/p>\n

<?php
\n
\n function massage($inh, $comph) {
\n if (strpos($comph, ' data-img=') !== false) { \/\/ strpos($inh, ' data-img=') === false &&
\n $outh=$inh;
\n $comphs=explode(\" id='MyNew-\", $comph);
\n for ($ii=1; $ii<sizeof($comphs); $ii++) {
\n if (strpos(explode('>',$comphs[$ii])[0], ' data-img=') !== false) {
\n if (strpos($outh, \" id='MyNew-\" . explode(\"'\",$comphs[$ii])[0] . \"'\") !== false) {
\n $outh=str_replace(\" id='MyNew-\" . explode(\"'\",$comphs[$ii])[0] . \"'\", \" id='MyNew-\" . explode(\"'\",$comphs[$ii])[0] . \"' data-img=\" . explode(' data-img=',explode('>',$comphs[$ii])[0])[1] . ' ', $outh);
\n }
\n }
\n }
\n return $outh;
\n }
\n return $inh;
\n }<\/font>
\n<\/code>
\n?><\/p>\n

… but “asking for more” for most intents and purposes once or twice a day (as part of our scheduled crontab\/curl Korn Shell<\/a> coded overnight runs<\/sup> functionalities encapsulated in Out and About WordPress Blog Content Tweaks Just with iPhone Tutorial<\/a>‘s animated GIF<\/a> presentation)<\/font> rather than whenever a user asked for a random tutorial picture such as happens when you click the link below, for example …<\/p>\n


\nhttps:\/\/www.rjmprogramming.com.au\/ITblog\/500\/500\/<\/a>
\n<\/code> <\/p>\n

Ahhhh, more sleepful if this is a word<\/font> nights!<\/p>\n

Stop Press<\/i><\/b><\/p>\n

But then, there was unfinished Fred and Ginger referencing to think about, so …<\/p>\n


\nA Fred and Ginger sing along<\/a>
\n<\/code><\/p>\n

… may be in order?!<\/p>\n

\n

\n

Previous relevant WordPress Javascript Coding Rearrangements Primer Tutorial<\/a> is shown below.<\/p>\n

\"WordPress<\/a>

WordPress Javascript Coding Rearrangements Primer Tutorial<\/p><\/div>\n

If you are a regular reader here reading yesterday’s Window Object Function Equals Function Primer Tutorial<\/a>‘s …<\/p>\n

\n … using (from within the clientside realms of the coding of this WordPress.org<\/a> blog’s)<\/font> Javascript …\n<\/p><\/blockquote>\n

… what might have zipped through your mind could have been the connecting phrase …<\/p>\n

\n … from within good ol’<\/font> TwentyTen theme’s header.php …\n<\/p><\/blockquote>\n

… or somesuch. Because that has been what we normally do<\/font>. Don’t get me wrong though, with the rearrangement idea blurb below, we could<\/font> persist arranging it that way (and if the Javascript relies on PHP, we still do)<\/font>, but that recent Performance Review we last referenced with PHP MySql WordPress Blog Apache Restart Watchdog Tutorial<\/a> got us to “see the light” somewhat<\/font> and reorganize a bit regarding how Javascript code within this WordPress.org<\/a> blog is organized. And so, read on.<\/p>\n

Did you feel let down with PHP MySql WordPress Blog Performance PHP-FPM Configuration Tutorial<\/a> when we said …<\/p>\n

\n\n\n\n\n
Codex loop.php<\/th>\nWordPress error 404 event PHP<\/th>\n<\/tr>\n
Overuse of file_get_contents<\/th>\nRearrange use of file_get_contents \u2026
passing more work to crontab\/curl overnight run<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/blockquote>\n

… and did not go into more detail?! So were we, but we had to think on this a lot<\/font> to flesh it out, and looked into the often used around here<\/font> PHP function …<\/p>\n


\nfile_get_contents<\/a>
\n<\/code><\/p>\n

To our reckoning, until recently, we’d never tried PHP file_get_contents with more than one parameter. But, perhaps, it helps website bandwidth<\/i> to start using those other parameters<\/strike>arguments (you say either, but we say neither … let’s call the whole thing <\/font>off<\/a><\/span><\/font>!)?<\/p>\n

Within the 404.php (HTTP Error 404 “Not Found”) PHP file_get_contents calls what was being asked content wise included all that webpage Javascript written into good ol’<\/font> TwentyTen theme’s header.php … ouch regarding bandwidth<\/font>! And so it led us to rearrange as per …<\/p>\n

    \n
  1. set aside Javascript that was interspersed with PHP as the Javascript we’d still keep in good ol’<\/font> TwentyTen theme’s header.php … but the rest, and it was considerable …<\/li>\n
  2. as for the rest, it could be placed into a new external Javascript file called hive_off_header_php.js<\/a> (first draft of several, at time of writing) … called via the less wordy<\/i> …
    \n
    \n<script type='text\/javascript' src='\/\/www.rjmprogramming.com.au\/ITblog\/hive_off_header_php.js?rand=<?php echo rand(0,1986754); ?>'><\/script>
    \n<\/code>\n<\/li>\n<\/ol>\n

    … to, we’re thinking …<\/p>\n

      \n
    1. potentially save on file_get_contents call website load bandwidth …<\/li>\n
    2. be able to design, in 404.php, parameters<\/strike>arguments (you say either, but we say neither … let’s call the whole thing <\/font>off<\/a><\/span><\/font>!) that are measurable and definitive hence the 150000<\/i> below)<\/font> … to end up with the modified<\/font> 404.php codeline …
      \n
      \n $thisbpc=file_get_contents('http<\/font>:\/\/www.rjmprogramming.com.au\/ITblog\/?p=' . $pnumis, FALSE, NULL, 0, 150000<\/font>);
      \n<\/code>\n<\/li>\n<\/ol>\n

      However, that is part one of two, to this part of the Performance Review. Part two will be explained in days to come.<\/p>\n

      \n

      \n

      Previous relevant Window Object Function Equals Function Primer Tutorial<\/a> is shown below.<\/p>\n

      \"Window<\/a>

      Window Object Function Equals Function Primer Tutorial<\/p><\/div>\n

      In keeping with yesterday’s Web Browser Brand Roles Primer Tutorial<\/a>‘s KISS<\/a> lead in, there’s a subtle difference between what happens with the two tabulated links below …<\/p>\n\n\n\n\n
      KISS<\/a><\/td>\nKISS<\/a><\/td>\n<\/tr>\n