Incrementing / Decrementing Operators ++ increment operator -- decrement operator Example Name Effect --------------------------------------------------------------------- ++$a Pre-increment Increments $a by one, then returns $a. $a++ Post-increment Returns $a, then increments $a by one. --$a Pre-decrement Decrements $a by one, then returns $a. $a-- Post-decrement Returns $a, then decrements $a by one. These can go before or after the variable. If put before the variable, the increment/decrement operation is done to the variable first then the result is returned. If put after the variable, the variable is first returned, then the increment/decrement operation is done. For example: $apples = 10; for ($i = 0; $i < 10; ++$i) { echo 'I have ' . $apples-- . " apples. I just ate one.\n"; } Live example In the case above ++$i is used, since it is faster. $i++ would have the ...
Showing posts with label Php Question. Show all posts
Showing posts with label Php Question. Show all posts
14 December, 2020
Reference — What does this symbol mean in PHP?
Incrementing / Decrementing Operators ++ increment operator -- decrement operator Example Name Effect --------------------------------------------------------------------- ++$a Pre-increment Increments $a by one, then returns $a. $a++ Post-increment Returns $a, then increments $a by one. --$a Pre-decrement Decrements $a by one, then returns $a. $a-- Post-decrement Returns $a, then decrements $a by one. These can go before or after the variable. If put before the variable, the increment/decrement operation is done to the variable first then the result is returned. If put after the variable, the variable is first returned, then the increment/decrement operation is done. For example: $apples = 10; for ($i = 0; $i < 10; ++$i) { echo 'I have ' . $apples-- . " apples. I just ate one.\n"; } Live example In the case above ++$i is used, since it is faster. $i++ would have the ...
How do you parse and process HTML/XML in PHP?
<?php How do you parse and process HTML/XML in PHP? Examples: How to get HTML elements: // Create DOM from URL or fi...
How do you parse and process HTML/XML in PHP?
<?php How do you parse and process HTML/XML in PHP? Examples: How to get HTML elements: // Create DOM from URL or fi...
StartsWith() and endsWith() functions in PHP
<?php startsWith() and endsWith() functions in PHP function startsWith( $haystack, $needle ) { $length = strlen( $needle ); ...
StartsWith() and endsWith() functions in PHP
<?php startsWith() and endsWith() functions in PHP function startsWith( $haystack, $needle ) { $length = strlen( $needle ); ...
Deleting an element from an array in PHP
<?phpThere are different ways to delete an array element, where some are more useful for some specific tasks than others.Deleting a single array elementIf you want to delete just one array element you can use unset() or alternatively \array_splice().If you know the value and don’t know the key to delete the element you can use \array_search()...
Deleting an element from an array in PHP
<?phpThere are different ways to delete an array element, where some are more useful for some specific tasks than others.Deleting a single array elementIf you want to delete just one array element you can use unset() or alternatively \array_splice().If you know the value and don’t know the key to delete the element you can use \array_search()...
How can I prevent SQL injection in PHP?
<?php Use prepared statements and parameterized queries. These are SQL statements that are sent to and parsed by the database serv...
How can I prevent SQL injection in PHP?
What is SQL Injection and How to Prevent in PHP Applications?Do you think that your SQL database works fine and is safe from immediate destruction? Well, SQL injection disagrees!Yes, we are talking about immediate death because I do not want to start this article with the usual lame terminology of "strict" and "malicious prevention". SQL injection...