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    <p>This is good only in case you are processing really massive data loads through AJAX. For other cases, just handle it in JS to not display result if canceled.</p> <p>But as I said If you are processing huge loads of data, then you can add a interrupt condition in every nth step of running script and fulfill that condition using another script. For example you can use a file to store a interrupt data, or MySQL MEMORY table.</p> <p>Example.</p> <p>1, process.php (ajax script processing loads of data)</p> <pre><code>// clean up previous potential interrupt flag $fileHandler = fopen('interrupt_condition.txt', 'w+'); fwrite($fileHandler, '0'); fclose($fileHandler); function interrupt_check() { $interruptfile = file('interrupt_condition.txt'); if (trim($interruptfile[0]) == "1") { // read first line, trim it and parse value - if value == 1 interrupt script echo json_encode("interrupted" =&gt; 1); die(); } } $i = 0; foreach ($huge_load_of_data as $object) { $i++; if ($i % 10 == 0) { // check for interrupt condition every 10th record interrupt_check(); } // your processing code } interrupt_check(); // check for last time (if something changed while processing the last 10 entries) </code></pre> <p>2, interrupt_process.php (ajax script to propagate cancel event to file)</p> <pre><code>$fileHandler = fopen('interrupt_condition.txt', 'w+'); fwrite($fileHandler, '1'); fclose($fileHandler); </code></pre> <p>This will definitely affect performance of your script, but makes you a backdoor to close execution. This is very simple example - you need to make it more complex to make it work for more users simultaneously, etc.</p> <p>You can also use <strong>MySQL MEMORY Table</strong>, <strong>MEMCACHE - Non-persistent Caching Server</strong> or whatever non-persistent storage you could find. </p>
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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