addcslashes — Quote string with slashes in a C style
style="color: #0000bb;"><?php
addcslashes('foo[ ]', 'A..z');
// output: \f\o\o\[ \]
// All upper and lower-case letters will be escaped
// ... but so will the [\]^_` and any tabs, line
// feeds, carriage returns, etc.
style="color: #0000bb;">?><?php
echo addcslashes("zoo['.']", 'z..A');
// output: \zoo['\.']
?> 
