\app\framework\Component\StdLibValidatorTrait

isSerialized()

isSerialized(string  $value, mixed  $result = null) : boolean

Checks if a string is serialized using quick string manipulation to throw out obviously incorrect strings. Unserialize is then run on the string to perform the final verification.

Valid serialized forms are the following:

• boolean: b:1;
• integer: i:1;
• double: d:0.2;
• string: s:4:"test";
• array: a:3:{i:0;i:1;i:1;i:2;i:2;i:3;}
• object: O:8:"stdClass":0:{}
• null: N;

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True if $value is serialized data, otherwise false

is()

is(  $var) 

Parameters

isNull()

isNull(mixed  $var) : boolean

Checks if given value is null.

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isEmpty()

isEmpty(mixed  $var) : boolean

Checks if given value is empty.

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isObject()

isObject(mixed  $var) : boolean

Check if given value is an object.

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isScalar()

isScalar(mixed  $var) : boolean

Check if given value is a scalar value.

Scalar values are: integer, float, boolean and string

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isResource()

isResource(mixed  $var) : boolean

Check if given value is a resource.

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isArray()

isArray(  $var) : boolean

Checks if given value is an array.

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isNumber()

isNumber(  $var) : boolean

Checks if value is a number.

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isInteger()

isInteger(  $var) : boolean

Checks if value is an integer.

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isCallable()

isCallable(  $var) : boolean

Checks whenever resource is callable.

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isString()

isString(  $var) : boolean

Checks if $var is type of string.

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isBool()

isBool(  $var) : boolean

Checks if $var is type of boolean.

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isBoolean()

isBoolean(  $var) : boolean

This is an alias function for self::isBool

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isFile()

isFile(  $var) : boolean

Checks if $var is a file.

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isReadable()

isReadable(  $var) : boolean

Checks if $var is readable.

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isDirectory()

isDirectory(  $var) : boolean

Checks if $var is a directory.

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isInstanceOf()

isInstanceOf(mixed  $instance, string  $type) : boolean

Check if $instance is of $type.

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isSubClassOf()

isSubClassOf(string|object  $subclass, string  $class) : boolean

Check if $subclass is a subclass of $class.

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isStringObject()

isStringObject(mixed  $instance) : boolean

Check if $instance is a StringObject.

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isDateTimeObject()

isDateTimeObject(mixed  $instance) : boolean

Check if $instance is a DateTimeObject.

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isFileObject()

isFileObject(mixed  $instance) : boolean

Check if $instance is a FileObject.

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isArrayObject()

isArrayObject(mixed  $instance) : boolean

Check if $instance is an ArrayObject.

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isUrlObject()

isUrlObject(mixed  $instance) : boolean

Check if $instance is a UrlObject.

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