php - Run/Execute CasperJS script by clicking a button on webpage -

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i have casperjs script returns json when run on commandline. want have arrangement such 1) create webpage 2) on clicking button on webpage casperjs scripts gets executed @ server side , post/return result webpage.

how can same.

edit: invoking ajax process written in php on clicking buttom. php script contains echo exec('casperjs sample.js');
returned nothing on checking webserver error log got error
'casperjs' not recognized internal or external command, operable program or batch file.

ps: running absolutely fine via commandline.

edit2
changed php script to:
echo exec('c:\casperjs\batchbin\casperjs .\sample.js');
error got modified :
'phantonjs' not recognized internal or external command, operable program or batch file.

i have found solution post on google group

https://groups.google.com/forum/#!topic/casperjs/7lps6tix-78

it worked moving casperjs & phantomjs executable file in directory server (/html)


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