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What's the use of ob_start() in php?

Is ob_start() used for output buffering so that the headers are buffered and not sent to the browser? Am I making sense here? If not then why should we use ob_start() ? ...
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How can I connect to a Tor hidden service using cURL in PHP?

... You need to set option CURLOPT_PROXYTYPE to CURLPROXY_SOCKS5_HOSTNAME, which sadly wasn't defined in old PHP versions, circa pre-5.6; if you have earlier in but you can explicitly use its value, which is equal to 7: curl_setopt($ch, CURLOPT_PROXYTYPE, 7...
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Calling Python in Java?

...yObject someFunc = interpreter.get("funcName"); PyObject result = someFunc.__call__(new PyString("Test!")); String realResult = (String) result.__tojava__(String.class); share | improve this answer...
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How do I partially update an object in MongoDB so the new object will overlay / merge with the exist

...e data then? You know you can do the following: db.collection.update( { _id:...} , { $set: someObjectWithNewData } share | improve this answer | follow | ...
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What is the easiest way to remove the first character from a string?

... fastest and most readable way of doing things: require 'benchmark' N = 1_000_000 puts RUBY_VERSION STR = "[12,23,987,43" Benchmark.bm(7) do |b| b.report('[0]') { N.times { "[12,23,987,43"[0] = '' } } b.report('sub') { N.times { "[12,23,987,43".sub(/^\[+/, "") } } b.report('gsub') { N.ti...
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Loading basic HTML in Node.js

...ttp'); var fs = require('fs'); var path = require('path'); var ext = /[\w\d_-]+\.[\w\d]+$/; http.createServer(function(req, res){ if (req.url === '/') { res.writeHead(200, {'Content-Type': 'text/html'}); fs.createReadStream('index.html').pipe(res); } else if (ext.test(req.ur...
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Writing a Python list of lists to a csv file

...s pd In [2]: a = [[1.2,'abc',3],[1.2,'werew',4],[1.4,'qew',2]] In [3]: my_df = pd.DataFrame(a) In [4]: my_df.to_csv('my_csv.csv', index=False, header=False) share | improve this answer ...
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How can I sanitize user input with PHP?

..., you must escape the string with MySQL's function for this purpose (mysqli_real_escape_string). (Or, in case of databases, using prepared statements are a better approach, when possible.) Another example is HTML: If you embed strings within HTML markup, you must escape it with htmlspecialchars. Th...
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How to print SQL statement in codeigniter model

... To display the query string: print_r($this->db->last_query()); To display the query result: print_r($query); The Profiler Class will display benchmark results, queries you have run, and $_POST data at the bottom of your pages. To enable the p...
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How to detect if app is being built for device or simulator in Swift

...ect iOS on a desktop architecture like follows #if (arch(i386) || arch(x86_64)) && os(iOS) ... #endif After Swift 4.1 version Latest use, now directly for all in one condition for all types of simulators need to apply only one condition - #if targetEnvironment(simulator) // ...