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How to determine the memory footprint (size) of a variable?

Is there a function in PHP (or a PHP extension) to find out how much memory a given variable uses? sizeof just tells me the number of elements/properties. ...
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Difference between “include” and “require” in php

... You find the differences explained in the detailed PHP manual on the page of require: require is identical to include except upon failure it will also produce a fatal E_COMPILE_ERROR level error. In other words, it will halt the script whereas include only emits a warning...
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php发送get、post请求的几种方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术

php发送get、post请求的几种方法方法1: 用file_get_contents 以get方式获取内容<?php$url='http: www.domain.com ';$html = file_get_contents($url);echo $...方法1:用file_get_contents 以get方式获取内容 <?php $url='http://www.domain.com/'; $html = file_get_contents(...
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In PHP what does it mean by a function being binary-safe?

In PHP what does it mean by a function being binary-safe ? 3 Answers 3 ...
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Convert one date format into another in PHP

... there a simple way to convert one date format into another date format in PHP? 15 Answers ...
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PHP Constants Containing Arrays?

... NOTE: while this is the accepted answer, it's worth noting that in PHP 5.6+ you can have const arrays - see Andrea Faulds' answer below. You can also serialize your array and then put it into the constant: # define constant, serialize array define ("FRUITS", serialize (array ("apple", "che...
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How to create an array for JSON using PHP?

From PHP code I want to create an json array: 10 Answers 10 ...
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PHP memory profiling

What's a good way to profile a PHP page's memory usage? For example, to see how much memory my data is using, and/or which function calls are allocating the most memory. ...
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How to get current time in milliseconds in PHP?

...e in seconds since the Unix epoch accurate to the nearest microsecond (see PHP reference). It's actually very easy to test if you run the above code in a loop and display the milliseconds. – laurent Dec 18 '12 at 10:08 ...
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PHP - Get key name of array value

...f you're sorting, use asort (asort($arr)). This maintains the key values. php.net/manual/en/function.asort.php – Rich701 Mar 9 '17 at 16:26 add a comment  |...