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MimeType::isType( string $mimeType ): bool

Since
0.1.0
Source
wp-includes/php-ai-client/src/Files/ValueObjects/MimeType.php:166
Checks if this MIME type is a specific type.

Description

This method returns true when the stored MIME type begins with the given prefix. For example, "audio" matches "audio/mpeg".

Compatibility

WordPress
since 0.1.0
PHP
7.4–8.6-dev
  • 6.7.7
  • 6.8.8
  • 6.9.7
  • 7.0.4
  • 7.1.0

Present in 2 of the 5 tracked releases, added in 0.1.0, and compiles on PHP 7.4 through 8.6-dev.

Parameters

$mimeTypestring
The MIME type prefix to check (e.g., "audio", "image").

Return value

bool
True if this MIME type is of the specified type.

Performance profile

How much work a call to MimeType::isType() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class
Trivial

Touches nothing outside its own arguments.

Scaling
Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions
8

Executed per call on PHP 8.5. The body compiles to 8.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
0

Nothing in core calls this; the cost is only what you spend yourself.

What one call costs · 1 distinct outcome

One number would be a lie: the work depends on which branch runs. These are every distinct cost MimeType::isType() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
always8strtolower()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev880
8.5880
8.48803 fewer instructions than PHP 8.3
8.311110
8.211110
8.1111102 fewer instructions than PHP 7.4
7.413130

An instruction is not a fixed amount of time, so a matching count is not necessarily the same speed; what it rules out is a difference in the work itself.

Uses · 1

Source code

View on Trac View on GitHub 

    public function isType(string $mimeType): bool    {        return str_starts_with($this->value, strtolower($mimeType) . '/');    }

Changelog

Introduced in 0.1.0. Unchanged from 7.0.4 through 7.1.0.

  1. 7.0.4
  2. 7.1.0

Signature, return type and hooks compared across 2 parsed releases.

About this page

Parsed data
Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/php-ai-client/src/Files/ValueObjects/MimeType.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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