如何使用PHP将Casperjs中保存在数据库中的URL用作源URL的来源？

Question

I have a small problem, i am new to casperjs so i was wondering if casper can work hand in hand with my current php script that loops through the results of of my database query results.

<?php
$urls = query url database

foreach($url as $url){
   then I send an execute command to casperjs.
}
?>

Then here is the js code where i want looped urls to be sent.

var casper = require('casper').create({
viewportSize: {
    width: 1024,
    height: 768
}
});

casper.start(**URL from PHP HERE**, function() {
this.capture('shy.png', {
    top: 0,
    left: 0,
    width: 1024,
    height: 1000
 });
});


casper.run();

my question is how do i send the command with a $url as the url source value to casperjs?

I am trying to make screenshot for each url supplied.

Answer 1

You can pass the URL to casperjs process via shell commands:

CasperJS CLI commands

eg casperjs --crawlurl= http://example.com

Then, you can call the casperjs process from PHP with something like shell_exec:

shell_exec

Note that for normal server provider, they may block the use of shell_exec.

Answer 2

You could just echo the urls in tags with the php script.

<?php
$urls = do_query();
foreach($urls as $url){
    echo "<a href=\"$url\"">$url</a><br />;
}
?>

Inject jQuery with your casperjs. Then use casperjs evaluate() with a jQuery selector on all the links to return all the links again.

var links = this.evaluate( function() {

    var $ = jQuery; // map jQuery to $

    var links = [];

    $('a').each( function() {

        links.concat($(this).attr('href'));

    });

    return links;

});

Then loop through the links and capture them.

Good luck!