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Depending on your problems, you should use print_r commands on various tacticallly sound spots in your php code (so it depends on your errors and what you're trying to debug). If used properly, you can &quot;trace&quot; a variable, and notice where it changes or behaves unexpectedly, and that's usually where the bug is (wrong formula, wrong logic, etc). I prefer Notepad++ for php editing (unless you already have a more expensive software package like Dreamweaver).
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Notepad++ don't have debugging feature, and we need to use print_r commands to list the variable, correct ?<br />
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How to use notepad++ to trace through ,say a.php -&gt; b.php -&gt; c.php. &nbsp;Any example on this ?<br />
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Tks
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I do like @Kimputer says. &nbsp;I just use my code editor and put in 'echo' and 'print_r' statements (temporarily) where I need to find out what's going on.. &nbsp;I have never had an IDE with a &quot;debugger&quot;.
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Do you mean simply modify the php code to print out some variables ? Run the php website again to dump the result. Afterwards, remove the code, correct ?<br />
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Tks
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It's often useful to follow the print_r or var_dump line with the command die. &nbsp;If there is an http request after the var_dump, the output can be &nbsp;overwritten before you can see what it is. &nbsp;the die command stops execution so you can see your var_dump output. <br />
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I use a macro that outputs the following code (inserting the contents of the clipboard in the parentheses, I copy the name of the variable I want to dump first, then run the macro):<br />
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/*DELETE*/ echo var_dump($request); die;
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@robin811: Good advice! &nbsp;Laravel has a dd() function that does a &quot;var_dump(); die()&quot; sequence. &nbsp;Very helpful for isolating that one nagging thing! &nbsp;Best to all, ~Ray
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I have installed WAMP server with php, MySQL. Which tool should I install in order to debug and modify the php code ? Any simple guideline on this ?<br />
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Tks
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I have installed WAMP server with php, MySQL. Which tool should I install in order to debug and modify the php code ? Any simple guideline on this ?

Tks

Code/debug php code

PHP is a widely-used server-side scripting language especially suited for web development, powering tens of millions of sites from Facebook to personal WordPress blogs. PHP is often paired with the MySQL relational database, but includes support for most other mainstream databases. By utilizing different Server APIs, PHP can work on many different web servers as a server-side scripting language.

MySQL is an open source, relational database management system that runs as a server providing multi-user access to a number of databases. Acquired by Oracle in 2009, it is frequently used in combination with PHP installations, powering most of the WordPress installations.