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PHP

Print script by shortcode on demand

<?php
/* 
= Register a script for use by shortcode only if present on page
* WordPress: 3.3.1
* Version: 1.1
* URL: elbone.com.au
* Files: functions.php
*/

// Register a script
add_action('init', 'register_my_script');
function register_my_script() {
    wp_register_script('my-script', plugins_url('my-script.js', __FILE__), array('jquery'), '1.0', true);
}

// The shortcode
add_shortcode('myshortcode', 'my_shortcode_handler');
function my_shortcode_handler($atts) {
    global $add_my_script; // global used by print_my_script();
 	$add_my_script = true;
 	// actual shortcode handling here
}

// Print the script if global is set
add_action('wp_footer', 'print_my_script');
function print_my_script() {
	global $add_my_script;
	if ( ! $add_my_script )
		return;
	wp_print_scripts('my-script');
}
https://snipt.net/embed/cc24ca882e947f8238c61163b039b35b/
/raw/cc24ca882e947f8238c61163b039b35b/
cc24ca882e947f8238c61163b039b35b
php
PHP
33
2019-06-24T12:16:20
True
False
False
/api/public/snipt/40680/
print-script-by-shortcode-on-demand
<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><a href="#L-1"> 1</a> <a href="#L-2"> 2</a> <a href="#L-3"> 3</a> <a href="#L-4"> 4</a> <a href="#L-5"> 5</a> <a href="#L-6"> 6</a> <a href="#L-7"> 7</a> <a href="#L-8"> 8</a> <a href="#L-9"> 9</a> <a href="#L-10">10</a> <a href="#L-11">11</a> <a href="#L-12">12</a> <a href="#L-13">13</a> <a href="#L-14">14</a> <a href="#L-15">15</a> <a href="#L-16">16</a> <a href="#L-17">17</a> <a href="#L-18">18</a> <a href="#L-19">19</a> <a href="#L-20">20</a> <a href="#L-21">21</a> <a href="#L-22">22</a> <a href="#L-23">23</a> <a href="#L-24">24</a> <a href="#L-25">25</a> <a href="#L-26">26</a> <a href="#L-27">27</a> <a href="#L-28">28</a> <a href="#L-29">29</a> <a href="#L-30">30</a> <a href="#L-31">31</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="cp">&lt;?php</span> </span><span id="L-2"><a name="L-2"></a><span class="cm">/* </span> </span><span id="L-3"><a name="L-3"></a><span class="cm">= Register a script for use by shortcode only if present on page</span> </span><span id="L-4"><a name="L-4"></a><span class="cm">* WordPress: 3.3.1</span> </span><span id="L-5"><a name="L-5"></a><span class="cm">* Version: 1.1</span> </span><span id="L-6"><a name="L-6"></a><span class="cm">* URL: elbone.com.au</span> </span><span id="L-7"><a name="L-7"></a><span class="cm">* Files: functions.php</span> </span><span id="L-8"><a name="L-8"></a><span class="cm">*/</span> </span><span id="L-9"><a name="L-9"></a> </span><span id="L-10"><a name="L-10"></a><span class="c1">// Register a script</span> </span><span id="L-11"><a name="L-11"></a><span class="nx">add_action</span><span class="p">(</span><span class="s1">&#39;init&#39;</span><span class="p">,</span> <span class="s1">&#39;register_my_script&#39;</span><span class="p">);</span> </span><span id="L-12"><a name="L-12"></a><span class="k">function</span> <span class="nf">register_my_script</span><span class="p">()</span> <span class="p">{</span> </span><span id="L-13"><a name="L-13"></a> <span class="nx">wp_register_script</span><span class="p">(</span><span class="s1">&#39;my-script&#39;</span><span class="p">,</span> <span class="nx">plugins_url</span><span class="p">(</span><span class="s1">&#39;my-script.js&#39;</span><span class="p">,</span> <span class="k">__FILE__</span><span class="p">),</span> <span class="k">array</span><span class="p">(</span><span class="s1">&#39;jquery&#39;</span><span class="p">),</span> <span class="s1">&#39;1.0&#39;</span><span class="p">,</span> <span class="k">true</span><span class="p">);</span> </span><span id="L-14"><a name="L-14"></a><span class="p">}</span> </span><span id="L-15"><a name="L-15"></a> </span><span id="L-16"><a name="L-16"></a><span class="c1">// The shortcode</span> </span><span id="L-17"><a name="L-17"></a><span class="nx">add_shortcode</span><span class="p">(</span><span class="s1">&#39;myshortcode&#39;</span><span class="p">,</span> <span class="s1">&#39;my_shortcode_handler&#39;</span><span class="p">);</span> </span><span id="L-18"><a name="L-18"></a><span class="k">function</span> <span class="nf">my_shortcode_handler</span><span class="p">(</span><span class="nv">$atts</span><span class="p">)</span> <span class="p">{</span> </span><span id="L-19"><a name="L-19"></a> <span class="k">global</span> <span class="nv">$add_my_script</span><span class="p">;</span> <span class="c1">// global used by print_my_script();</span> </span><span id="L-20"><a name="L-20"></a> <span class="nv">$add_my_script</span> <span class="o">=</span> <span class="k">true</span><span class="p">;</span> </span><span id="L-21"><a name="L-21"></a> <span class="c1">// actual shortcode handling here</span> </span><span id="L-22"><a name="L-22"></a><span class="p">}</span> </span><span id="L-23"><a name="L-23"></a> </span><span id="L-24"><a name="L-24"></a><span class="c1">// Print the script if global is set</span> </span><span id="L-25"><a name="L-25"></a><span class="nx">add_action</span><span class="p">(</span><span class="s1">&#39;wp_footer&#39;</span><span class="p">,</span> <span class="s1">&#39;print_my_script&#39;</span><span class="p">);</span> </span><span id="L-26"><a name="L-26"></a><span class="k">function</span> <span class="nf">print_my_script</span><span class="p">()</span> <span class="p">{</span> </span><span id="L-27"><a name="L-27"></a> <span class="k">global</span> <span class="nv">$add_my_script</span><span class="p">;</span> </span><span id="L-28"><a name="L-28"></a> <span class="k">if</span> <span class="p">(</span> <span class="o">!</span> <span class="nv">$add_my_script</span> <span class="p">)</span> </span><span id="L-29"><a name="L-29"></a> <span class="k">return</span><span class="p">;</span> </span><span id="L-30"><a name="L-30"></a> <span class="nx">wp_print_scripts</span><span class="p">(</span><span class="s1">&#39;my-script&#39;</span><span class="p">);</span> </span><span id="L-31"><a name="L-31"></a><span class="p">}</span> </span></pre></div> </td></tr></table>
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