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PHP - concatenate or directly insert variables in string

I am wondering, What is the proper way for inserting PHP variables into a string? This way: 14 Answers ...
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PHP equivalent of .NET/Java's toString()

How do I convert the value of a PHP variable to string? 24 Answers 24 ...
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Change Name of Import in Java, or import two classes with the same name

...translation process requires you to refer to both classes in the same code block. In such a case (which must be very common), Java makes life very difficult. Just the number of views on this post should tell you the story. – hrshi1990 Jun 12 '17 at 6:30 ...
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Easy way to test a URL for 404 in PHP?

... If you are using PHP's curl bindings, you can check the error code using curl_getinfo as such: $handle = curl_init($url); curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE); /* Get the HTML or whatever is linked in $url. */ $response = cur...
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Best way to do multiple constructors in PHP

...u can't put two __construct functions with unique argument signatures in a PHP class. I'd like to do this: 21 Answers ...
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How to round up a number to nearest 10?

How can we round off a number to the nearest 10 in php? 16 Answers 16 ...
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Getting HTTP code in PHP using curl

...lso helps with following redirects): How can I check if a URL exists via PHP? As a whole: $url = 'http://www.example.com'; $ch = curl_init($url); curl_setopt($ch, CURLOPT_HEADER, true); // we want headers curl_setopt($ch, CURLOPT_NOBODY, true); // we don't need body curl_setopt($ch, CUR...
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(HTML) Download a PDF file instead of opening them in browser when clicked

... you will need to use a PHP script (or an other server side language for this) <?php // We'll be outputting a PDF header('Content-type: application/pdf'); // It will be called downloaded.pdf header('Content-Disposition: attachment; filename="do...
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How to compare two dates in php

How to compare two dates in php if dates are in format '03_01_12' and '31_12_11' . 15 Answers ...
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Only variables should be passed by reference

...file_name) cannot be turned into a reference. This is a restriction in the PHP language, that probably exists for simplicity reasons. share | improve this answer | follow ...