Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP ctype_cntrl() Function.
The built-in ctype_cntrl() function checks if all the character in the given string, text, are control characters. The example of control characters are line feed, escape, tab.
The built-in ctype_cntrl() function checks if all the character in the given string, text, are control characters. The example of control characters are line feed, escape, tab.
Syntax
Following below is the syntax to use this function -
ctype_cntrl ( $text );
Parameter Details
Sr.No | Parameters & Description |
---|---|
1 | text(Required) The tested string. |
Return Value
This built-in function returns TRUE if all the characters in the text is a control character from the current locale, FALSE otherwise.
Example
Try out the below example -
<?php $strings = array('\n\r\t', 'example1234r'); foreach ($strings as $test) { if (ctype_cntrl($test)) { echo "$test consists of all control characters. \n"; }else { echo "$test does not have all all control characters. \n"; } } ?>
Output
When the above code is executed, it will produce the following result -
n\r\t does not have all all control characters. example1234r does not have all all control characters.
Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the PHP ctype_digit() Function.
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Feel free to ask your questions where necessary and we will attend to them as soon as possible. If this tutorial was helpful to you, you can use the share button to share this tutorial.
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Thanks for reading and bye for now.