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Tag Archives: Functions
Remove Specific Element From An Array PHP
Following code will help to remove a particular element from an array
<?php
$appliedRuleIs = array(370,369,400,500);
if (($key = array_search(‘369’, $appliedRuleIs)) !== false) {
unset($appliedRuleIs[$key]);
}
?>
What is the use of the function ‘imagetypes()’?
imagetypes() gives the image format and types supported by the current version of GD-PHP.
What type of operation is needed when passing values through a form or an URL?
If we would like to pass values througn a form or an URL then we need to encode and to decode them using htmlspecialchars() and urlencode().
What is difference between require_once(), require(), include()?
require() includes and evaluates a specific file, if the file is not found then it shows a Fatal Error.
require_once() includes only the file which is not being included before. It is used to be recommended for the files where you have lots of functions stored.
include() includes the file, even if the file is not found, but it gives a warning to the user to include().
What is the purpose of $_SESSION[]?
Used to store variables of the current session.
The purpose of the function $_SESSION[] is to store data that you would like to preserve across page loads and to store variables of current session.
In mysql_fetch_array() If two or more columns of the result have the same field names, what action is taken?
The mysql_fetch_array() function returns a row from a recordset as an associative array and a numeric array.
If two or more columns of the result have the same field names,then the last column will take precedence.
What is x+ mode in fopen() used for?
Read/Write. Creates a new file. Returns FALSE and an error if file already exists
What is the default execution time set in set_time_limit() PHP
The default execution time set in set_time_limit() function is 30 secs.
This function restarts the timer counter form zero and when the number of seconds a script is allowed to run is reached, it returns a fatal error.
Check if a string exists javascript
<script type=”text/javascript”>
if(window.location.href.indexOf(“https:”) > -1) {
alert(“its a secure URL”);
}
</script>