Errata

In the following code, there shouldn't be a space between the 2 equals signs -
<?php
$Name = "Bob";
if ($Name = = "Jim") {
print "Your name is Jim
";
} elseif ($Name = = "Linda") {
print "Your name is Linda
";
} elseif ($Name = = "Bob") {
print "Your name is Bob
";
} elseif ($Name = = "Sally") {
print "Your name is Sally
";
} else {
print "I don't know your name!
";
}
?>

it should be:
<?php
$Name = "Bob";
if ($Name == "Jim") {
print "Your name is Jim
";
} elseif ($Name == "Linda") {
print "Your name is Linda
";
} elseif ($Name == "Bob") {
print "Your name is Bob
";
} elseif ($Name == "Sally") {
print "Your name is Sally
";
} else {
print "I don't know your name!
";
}

should read:
if you type 'Hello


', PHP will...

In the output of the example, it includes "Danny" - it should not.

As an example of operator associativity, the book uses the example of a make-believe
operator 'mu' (the Greek letter). In the normal text (serif font), the symbol itself
appears (i.e. it is not spelled out like I have done above). However, in the two
following code examples (monospaced font, one at the bottom of page 87, the other at
the top of page 88), the symbol does not appear; a space is printed instead. The
examples appear like this in the text:

$foo = $a $b $c;
// would be treated as...
$foo = ($a ($b $c));

$foo = $a $b $c;
// would be treated as...
$foo = (($a $b) $c);

In each case, the symbol for 'mu' should (presumably) take the place of a space
between two variables, or between a variable and a parenthesis.

"essentially reversing the operation of sine()"
should be
"essentially reversing the operation of sin()"

"print decbin("10000"); // 16"
should be
"print bindec("10000"); // 16"

"nothing will happen" should be
"the parameter will be returned unchanged"

"2 if the connection has been aborted" should be
"2 if the connection has timed out"

The dechex() function converts a decimal number into a binary number.
should be:
The dechex() function converts a decimal number into a hexadecimal number.

html_entities() should really be htmlentities()

"print hexdec(e8); // 232" should be
"print hexdec("e8"); // 232"

echo "Total charge is $", number_format($total, 2, ".", ","), " Euros";
should be:
echo "Total charge is $", number_format($total, 2, ",", "."), " Euros";

"Parameter is a positive integer"
should read
"Parameter is an integer"

"$a = strtoupper($string);" should be
"$a = ucfirst($string);"

"class dog {"
declaration should be
"class Dog {".
(Capital 'D')

The line:
"However, if you use ==, you will get false back,"
should read:
"However, if you use ===, you will get false back,"

The sentence is trying to point out the difference between == and ===, but it
incorrectly uses ==.

The second </body> tag should be </html> instead.

In the first two echo commands, the closing anchor tag </A>
should be:
</a>.

The first sentence reads: "The file_get_contents() function opens $varname..." It
should read: "The file_get_contents() function opens $filename..."

The fourth example down in Table 15-4. The result in the right hand coloumn states
"True; must end with one lowercase letter", when it it should read "False; must end
with one lowercase letter".

This particular example is on the author's own website, where it shows the correct
result:
http://www.hudzilla.org/phpbook/read.php/4_8_3

Last line of code example reads:

var_dump($myarray);

Should read:

var_dump($matches);

The first sentence reads "The headers_sent() takes no parameters,..." It should read
"The headers_list() function takes no parameters,..."