addcslashes() : adding slashes in a C style

$string="Hello welcome to plus2net Php section";
echo addcslashes($string,'e');

H\ello w\elcom\e to plus2n\et Php s\ection 

single quote (')
double quote (")
backslash (\)
NUL (the NUL byte)

string addcslashes(string,string or charlist)

$str = "Welcome  'to plus2net PHP section";
echo addcslashes($str,"'");

Welcome \'to plus2net PHP section

Escaping more than one char

$string="Hello welcome to plus2net Php section";
echo addcslashes($string,'c,o,n');

Hell\o wel\c\ome t\o plus2\net Php se\cti\o\n 

For a series of chars

$string="Hello welcome to plus2net Php section";
echo addcslashes($string,'a..z');

H\e\l\l\o \w\e\l\c\o\m\e \t\o \p\l\u\s2\n\e\t P\h\p \s\e\c\t\i\o\n 

Example 2: Escaping Digits in a String

$str = "Product123";
$escaped_str = addcslashes($str, '0..9');
echo $escaped_str; // Outputs: Product\1\2\3

Example 3: Escaping Special Characters

$str = "Hello! How are you?";
$escaped_str = addcslashes($str, '!');
echo $escaped_str; // Outputs: Hello\! How are you?

Subhendu Mohapatra

Author

🎥 Join me live on YouTube

Passionate about coding and teaching, I publish practical tutorials on PHP, Python, JavaScript, SQL, and web development. My goal is to make learning simple, engaging, and project‑oriented with real examples and source code.

← Subscribe to our YouTube Channel here