Tag: php

67 votes
30 answers
1.9K views
How do I convert a string to a number in PHP?

I want to convert these types of values, '3', '2.34', '0.234343', etc. to a numb

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Corrin
0 1 0 9
asked 07 September, 2021
55 votes
11 answers
1.2K views
57 votes
30 answers
2.6K views
How to check if PHP array is associative or sequential?

PHP treats all arrays as associative, so there aren't any built in functions. Can anyone recommend a fair

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Gigi
0 1 0 9
asked 07 September, 2021
59 votes
4 answers
1.7K views
What is thread safe or non-thread safe in PHP?

I saw different binaries for PHP, like non-thread or thread safe? What does this mean? What is the differen

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Basil
0 1 0 9
asked 07 September, 2021
59 votes
7 answers
2.3K views
What is the difference between single-quoted and double-quoted strings in PHP?

I'm a little confused why I see some code in PHP with string placed in single quotes and sometimes in dou

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Jeff
0 1 0 9
asked 07 September, 2021
64 votes
30 answers
2.5K views
Convert a PHP object to an associative array

I'm integrating an API to my website which works with data stored in objects while my code is written usi

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Jeff
0 1 0 9
asked 07 September, 2021
52 votes
27 answers
736 views
Remove empty array elements

Some elements in my array are empty strings based on what the user has submitted. I need to remove those eleme

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Lynette
0 1 0 9
asked 07 September, 2021
52 votes
30 answers
539 views
PHP random string generator

I'm trying to create a randomized string in PHP, and I get absolutely no output with this: <?php

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Janella
0 1 0 9
asked 07 September, 2021
58 votes
30 answers
1.3K views
How do I get the current date and time in PHP?

Which PHP function can return the current date/time?

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Lynette
0 1 0 9
asked 07 September, 2021
54 votes
10 answers
1.7K views
How can I do &apos;insert if not exists&apos; in MySQL?

I started by googling and found the article How to write INSERT if NOT EXISTS queries in standard SQL which ta

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Bryan
0 1 0 9
asked 07 September, 2021
53 votes
14 answers
2.9K views
Where can I find php.ini?

A few years ago I installed Apache 2.2x and PHP 5.3.1 on a Linux server I maintain. I used .tar.gz's and

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Omar
0 1 0 9
asked 07 September, 2021
53 votes
28 answers
356 views
Get the full URL in PHP

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Sachiko
0 1 0 9
asked 07 September, 2021
52 votes
30 answers
1.5K views
mysql_fetch_array()/mysql_fetch_assoc()/mysql_fetch_row()/mysql_num_rows etc... expects parameter 1 to be resource

I am trying to select data from a MySQL table, but I get one of the following error messages: mysql_fetch_

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Boyd
0 1 0 9
asked 07 September, 2021
55 votes
19 answers
1K views
Returning JSON from a PHP Script

I want to return JSON from a PHP script. Do I just echo the result? Do I have to set the Content-Type header?

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Gigi
0 1 0 9
asked 07 September, 2021
52 votes
20 answers
1.3K views
PHP array delete by value (not key)

I have a PHP array as follows: $messages = [312, 401, 1599, 3, ...]; I want to delete the element containin

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Serina
0 1 0 9
asked 07 September, 2021
56 votes
13 answers
1.1K views
Detecting request type in PHP (GET, POST, PUT or DELETE)

How can I detect which request type was used (GET, POST, PUT or DELETE) in PHP?

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Omar
0 1 0 9
asked 07 September, 2021
63 votes
30 answers
965 views
How do I use PHP to get the current year?

I want to put a copyright notice in the footer of a web site, but I think it's incredibly tacky for the y

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Renaldo
0 1 0 9
asked 07 September, 2021
52 votes
17 answers
1.4K views
What is the difference between public, private, and protected?

When and why should I use public, private, and protected functions and variables inside a class? What is the d

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Nidia
0 1 0 9
asked 07 September, 2021
65 votes
4 answers
1.7K views
What are Long-Polling, Websockets, Server-Sent Events (SSE) and Comet?

I have tried reading some articles, but I am not very clear on the concepts yet. Would someone like to take a

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Wei
0 1 0 9
asked 07 September, 2021
59 votes
17 answers
310 views
How do I expire a PHP session after 30 minutes?

I need to keep a session alive for 30 minutes and then destroy it.

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Hildegard
0 1 0 9
asked 07 September, 2021