OOQ

#php #PHP/operators/logical operators $a and $b Returns TRUE if both $a and $b are TRUE. $a or $b Returns TRUE if $a or $b is TRUE. Note that if both are TRUE, it is also TRUE. That is, FALSE only if both are FALSE. $a x or $b Returns TRUE only if either $a or $b is TRUE. ! $a Returns TRUE if $a is not TRUE. $a && $b Returns TRUE if both $a and $b are TRUE. $a || $b Returns TRUE if $a or $b is T..

#php #PHP/operators/increase operator, decrease operator ++$a Returns $a after increasing the value. for example $a = 1; echo ++$a; will output 2. $a++ After returning $a , increment the value. for example $a = 1; echo $a++; will output 1 and the value of $a will be 2. --$a Returns $a after decrementing the value. for example $a = 1; echo --$a; will output 0. $a-- Decrease the value after return..

#php #PHP/operators/comparison operators A comparison operator is an operator that compares two values. $a == $b Returns TRUE if $a equals $b. for example $a = 123; $b = 123; This is TRUE. Also $a = 123; $b = '123'; When is also TRUE. $a === $b Returns TRUE if $a and $b are the same and have the same data type. for example $a = 123; $b = 123; This is TRUE. but, $a = 123; $b = '123'; is FALSE. $a..

#PHP #PHP/operators/arithmetic operators Arithmetic operators in PHP include +, -, *, /, %, **. - $a Reverse the sign of $a. will print -10. $a + $b Add $a and $b. will output 14. $a - $b Subtract $b from $a. will output 6. $a * $b Multiply $a and $b. will print 40. $a / $b Divide $a by $b. will output 2.5. $a % $b The remainder of dividing $a by $b. $a = 10; $b = 4; echo $a % $b; ?> will output..

#php #php / operator / assignment operator The assignment operator in PHP is =. Save the right side of the equal sign to the left side of the equal sign. $a = 10; Assign 10 to variable a. $a = 10; $a = 20; If you assign multiple times, the last assigned will be the value. So the value of variable a is 20. $a = 10; $a = $a + 10; You can use existing values. The value of variable a is 20.

#php #How to create PHP Sometimes it is necessary to automatically create variables according to a schedule rule. It seems that such a variable is called a floating variable, but I'm not sure if it's an official term. When I try to create a flow variable, I have to put the variable in when creating the variable name. For example, if you wanted to put the name $var in your variable name, you woul..

#php #php grammar Put PHP code in HTML document Put your PHP code in an HTML document. To do this, you have to tell it which parts are PHP code. There are several ways to specify the PHP code part, but usually [Method 1] is used. Method 1 Put your PHP code between . Method 2 Put your PHP code between the script tags. others You can also use the following form when setting on the server, i.e. in ..