apc_dec

(PECL apc >= 3.1.1)

apc_decDecrease a stored number

Descrição

int apc_dec ( string $key [, int $step = 1 [, bool &$success ]] )

Decreases a stored integer value.

Parâmetros

key

The key of the value being decreased.

step

The step, or value to decrease.

success

Optionally pass the success or fail boolean value to this referenced variable.

Valor Retornado

Returns the current value of key's value on success, ou FALSE em caso de falha

Exemplos

Exemplo #1 apc_dec() example

<?php
echo "Let's do something with success"PHP_EOL;

apc_store('anumber'42);

echo 
apc_fetch('anumber'), PHP_EOL;

echo 
apc_dec('anumber'), PHP_EOL;
echo 
apc_dec('anumber'10), PHP_EOL;
echo 
apc_dec('anumber'10$success), PHP_EOL;

var_dump($success);

echo 
"Now, let's fail"PHP_EOLPHP_EOL;

apc_store('astring''foo');

$ret apc_dec('astring'1$fail);

var_dump($ret);
var_dump($fail);
?>

O exemplo acima irá imprimir algo similar à:

Let's do something with success
42
41
31
21
bool(true)

Now, let's fail
bool(false)
bool(false)

Veja Também

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User Contributed Notes 1 note

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1
elfi47
1 year ago
check for errors with === FALSE or === 0

dec() will increase to 3, 2, 1, 0, -1, -2, -3....

if you check with == FALSE you will get an wrong FALSE result if the variable is on 0.
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